International Conference on Applied Chemistry October 17-18, 2016 Houston, USA

Biography:

Dina Ahmed El-Gayar has completed her PhD from Alexandria University Faculty of Engineering and finished MSc Chemical Engineering from the same university in 2009. She is Lecturer at Chemical Engineering Department, Alexandria University. She is Instructor for Process control and Renewable Energy Resources. She is member in the executive office of Quality Assurance Unit in faculty of Engineering. She works in Alex Uni. Team in a Trinex project funded by Tempus as one of the partners of the project. She has published 2 papers in international journals and 2 papers are in progress.

Abstract:

Rates of mass transfer at the inner rough surface of an annulus were determined under swirl flow by an electrochemical technique which involves measuring the limiting current of the cathodic reduction of K₃Fe(CN)₆. Roughness was made by cutting longitudinal grooves in the inner cylinder transverse to swirl flow. The variables studied were solution velocity, peak to valley height of the roughness element, physical properties of the electrolyte, active length of the inner cylinder and the effect of drag reducing polymers. The rate of mass transfer was found to increase with increasing swirl flow velocity and the degree of surface roughness. Mass transfer data at smooth and rough surfaces were correlated by dimensionless correlations. Drug reducing polymers were found to decrease the rate of mass transfer by an amount ranging from 5 to 23%. Implication of the present results for the design and operation of high space-time yield annular and catalytic reactors used to conduct diffusion controlled reactions such as electro organic synthesis; electrochemical waste water treatment; photo catalytic reactions and immobilized enzyme catalyzed biochemical reactions etc., were highlighted. The importance of the present results in designing more efficient annular membrane equipment's with inner corrugated membrane to conduct processes such as reverse osmosis, dialysis and ultra-filtration under swirl flow was pointed out. By virtue of the analogy between heat and mass transfer the importance of the present results in designing more efficient heat exchanger was noted.

Biography:

Antonio Martins Figueiredo Neto concluded in Physics The DPA [SP-CAPITAL] by Sao Paulo University in 1981. Currently, he is Professor at Sao Paulo University. He has published over 100 journal articles and more than 20 papers in event proceedings. He published a book about the Physics of Crystals Liquids by Oxford University Press and Co-edited “Another World” for SCI. He has 3 chapters published in books and 4 product technological registered. He guided more than two Master’s dissertations and PhD theses in Physics and received one prize and/or tribute. He worked extensively in physics, with emphasis in physics of fluids complex.

Abstract:

Lyotropic mixture of potassium laurate/decanol/water presenting only the uniaxial nematic calamitic phase was doped with KCl, DL-mandelic acid, benzoic acid, DL-phenyllactic acid, phenylacetic acid, phenol, phenylmethanol, benzene, RS-hexahydromandelic acid, cyclohexanecarboxylic acid, cyclohexaneacetic acid, cyclohexanol, cyclohexylmethanol and cyclohexane, separately. The nematic phase sequences were investigated as a function of the dopant molar concentration and temperature. Laser conoscopy was used to characterize the nematic phases. Weak electrolytes having –COOH group as polar part were shown to be very effective in stabilizing the three nematic phases (two uniaxial and the biaxial). Guest molecules with only the –OH group did not show any effect on the stabilization of other nematic phases. There is no direct relation between the solubility of the guest molecule in water and its effectiveness to stabilize the different nematic phases. We observed that the guest molecule acidity constant pK_a was shown to be an important parameter. These dopants were shown to be more effective in the stabilization of the three nematic phases when comparing to strong electrolytes. We interpreted the results in terms of the location of dopant molecules at the micelle surfaces and their effectiveness of screening the polar head repulsion. This situation favors the relaxing of curved surfaces in the micelle, increasing the flat micellar surfaces. These flat surfaces are perpendicular to the main amphiphilic bilayer. The increase of the micellar dimensions in this plane favors the orientational fluctuations characteristic of the nematic discotic phase, as observed in our experimental results.

Biography:

Mauro Coelho dos Santos has completed his PhD from São Paulo University, Brazil and Post-doctoral studies from Federal University of São Carlos, Brazil. He is the Coordinator of the Laboratory of Electrochemistry and Nanostructured Materials of ABC Federal University, Brazil. He has published more than 86 papers in reputed journals and has been serving as an Editorial Member of Electrocatalysis. He serves as the Editor of Journal of Nanomaterials (2012). He has received Academic Excellence Prize from Federal University of ABC (2015) in the area of Chemistry. He has 1,300 citations in ISI and H-Index of 23.

Abstract:

This work describes the use of both carbon modified with nanostrucutres (nanoparticles, nanowires and nanospheres) containing metal and metals oxides and boron doped diamond electrodes for degradation of cyprofloxacine, fenol, dypirone, blue – Evans dye. The main materials prepared are related to: Carbon materials modified with functional groups by acidic and alkaline treatment and nanomaterials modifying carbon support. The effects of increasing H₂O₂ electrogeneration are associated to the surface properties of the two materials which are completely different from those ones of pure carbon for further production of hydroxil radicals. For this reason, we have been developing changes of the carbon materials with acidic and alkaline treatment and using nanostructures of different oxides and metals with very small amounts on carbon and base materials for H₂O₂ electrogeneration. The main surface chemistry phenomena of this work is to discuss the modification of the carbon properties such as hydrophilicity, conductivity, structure and composition of the surface species when we use both different carbon treatments and different proportions of nanostructures with several oxides and metals on carbon. In the case of the use of Boron-Doped Diamond Surfaces using Solar Photo-Electron-Fenton Processes is same as in the case of cyprofloxacione in synthetic urine. At the latter case we are capable to promote the electrochemical incineration of the molecule yielding 96% ciprofloxacin removal and 98% mineralization after 360 min of electrolysis at optimum values of pH 3.0 and current density of 66.6 mA cm⁻². The evolution of released inorganic ions was followed by ion chromatography.

Biography:

Venkatasubba Naidu Nuthalapati has completed his PhD from Sri Venkateswara University and currently working as a Professor in the Department of Chemistry, Sri Venkateswara University, India. His research involves the development of novel and cost effective spectroscopic and electrochemical methods for the detection of organic and inorganic molecules from different matrices. He has published more than 100 papers in reputed journals and has been serving as an Editorial Board Member of repute.

Abstract:

An improved high performance dual enzyme based biosensor has been developed for the determination of aspartame in food samples. The nanobiocomposite involves ammonium piperidine dithiocarbamate (APDC) capped copper nanoparticles (CuNPs) loaded on multi walled carbon nanotubes (MWCNTs) and assimilated with β-cyclodextrin. Finally, the dual enzyme system was immobilized onto the electrode surface to construct CHT-LAAO/CuNPs-APDC-MWCNTs-β-CD/GCE. Characterization was performed using Transmition electron microscope (TEM), Thermogravimmetric analysis (TGA), X-ray diffraction (XRD) and Fourier transition infrared spectroscopy (FT-IR). The biosensor showed optimum response within 5s at pH 7.5 and 35^oC, when polarized at 0.25 V vs. Ag/AgCl. Furthermore, CHT and LAAO were adsorbed tightly on the surface of the modified electrode and shows enzyme activity to convert aspartame to its oxidized product of keto ester and H₂O₂. There was a linear relationship between biosensor response (mA) and aspartame concentration in the range 0.001–2.0 mM. The sensitivity of the biosensor was 78.35 µA cm⁻²mM⁻¹ with a detection limit of 0.005 mM (S/N=3). The long term stability of the sensor in terms of 89.0% of the original response on the third day was observed when conducted over a range of ten runs for five days using the same coating. The biosensor was evaluated and employed for the measurement of aspartame concentrations in different commercially available food samples.

Biography:

Sergei A Kulinich obtained his PhD degree in Inorganic Chemistry from Moscow State University and then was a Post-doctoral fellow and Research Associate at the University of Tokyo (Materials Engineering), University of Quebec at Chicoutimi (Applied Sciences), University of British Columbia (Chemistry) and Osaka University (Materials Engineering). His recent research activities include gas sensors, thin films and coatings, materials and surface analysis, superhydrophobic and anti-icing surfaces and nanomaterials (especially those prepared via laser ablation in liquids).

Abstract:

Gas sensors play a key role in daily life, contributing actively to toxic- and explosive-gas alarms, automotive cabin air-quality control, health care, household appliances and so on. Therefore, tremendous efforts have been recently made to design and fabricate reliable and durable sensors with high sensitivity and selectivity, as well as fast response, toward various gases. This work focuses on chemi-resistive gas sensors prepared via the chemical bath deposition approach, such as nanoarrays of CdO, which demonstrate promise in detecting certain volatile organic compounds, having high selectivity, sensitivity and fast response time. The preparation, characterization and performance of such sensors are described and sensing mechanisms are commented.

Biography:

Xuenian Chen has done his PhD from Lanzhou Institute of Chemical Physics (LICP) of Chinese Academy of Sciences (CAS). He is the Director of Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials. His major field is Boron Chemistry, Organometallic and Coordination Chemistry. He has published more than 80 papers in reputed journals and has been serving as an Editorial Board Member of repute.  
 

Abstract:

Agostic interaction is a weak interaction between an inert C-H and M, which often used to activate C‒H bonds resulting in new reactions. In this topic, we report examples of designed catalysts based on the agostic interaction. Novel copper(I) complexes [BBN(pz^x)₂]Cu(PPh₃)_n (BBN=9-borabicyclo[3.3.1]nonane; pz^x=3-substituted pyrazole; x=H, n=2; x=Me, n=1) and {[BBN(pz^iPr)₂]Cu}₂ have been synthesized and structurally characterized. Single crystal studies of these compounds showed weak intra-molecular C‒H∙∙∙Cu interactions which can be assigned as agostic interactions. Catalytic studies of these complexes toward carbenoid insertion into N‒H bonds indicate these weak interactions act as a “switch” which will be turned “on” if interacting with the substrate and “off” if eliminating the substrate and regenerating the weak interaction. The process of the “switch” turning “on” or “off”, related to the catalytic effect, is found to be influenced by both steric effects and the solvent: a less sterically hindered catalyst in non-coordinating benzene results in high yield, while a more sterically hindered catalyst in coordinating THF results in relatively low yield. We also found that the agostic interaction in nickel containing complex could cause great C-H chemical shift.

Biography:

M C Enedoh has completed her PhD from the University of Abuja, Nigeria. She has published some papers in reputable journals. She has been serving as a Lecturer in Chemistry at the Imo State University, Nigeria. She is an Academic Adviser to all chemistry students.

Abstract:

Synthesis of the complexes of salicylaldehyde-2-amino-4-thiazoleacetic acid hydrazone (ATASH) with M(II) sulphates and acetates was carried out (M=Ni, Cu, Co, Mn and Zn). The ligand and complexes were characterized by conductance, elemental analyses, infrared and electronic spectral studies. The conductivity data showed that both the ligand and complexes are non-electrolyte. The ligand and complexes were screened for antimicrobial activity and one of the compounds was relatively active against the organism tested. An octahedral coordination for Ni²⁺, Mn²⁺and Co²⁺ complexes was observed through the electronic spectroscopy while Cu²⁺ complexes may possibly be of a square planar coordination. The Infrared spectra a data indicate bidentate coordination via the oxygen of the carbonyl group and the azomethine group, the SO₄^2- and OA^- anions are in their inner coordination spheres.

Biography:

Zhiyong Wang completed his PhD in Chemistry from Northwestern University and received Post-doctoral studies at University of Pittsburgh and then Texas A&M University. He worked in a number of organic chemistry related areas including enzyme inhibitor design, drug discovery, protein functional studies and applications of metal-organic frameworks. He is currently an Assistant Professor at the Department of Chemistry and Physics at Troy University. He has published more than 20 papers in reputable journals.
 

Abstract:

By combining the great catalytic activity of palladium nanoparticles and large surface area and tunable structure of metal-organic frameworks, we have developed a Pd@MIL-101 composite material as a heterogeneous catalyst for the tandem in situ generation of hydrogen from ammonia borane and reduction of various nitro compounds. The catalyst exhibits high activity, selectivity and recyclability. A variety of aliphatic and aromatic nitro compounds with different groups were able to be reduced to the respective primary amines with excellent conversion yields (>99%) in very short reaction times (1.5–5 min). Six consecutive runs of the tandem catalysis result in no discernable loss of catalytic ability, demonstrating the great stability and recyclability of the Pd@MIL-101 catalyst. Compared to other reported reduction systems for nitro compounds, our catalyst does not require stored or pressurized hydrogen and it is therefore not only more efficient but also much safer. The application of Pd@MIL-101 in a number of other organic transformations will also be discussed.

Biography:

Xiaoming Sun has gained his BS degree and PhD in Department of Chemistry, Tsinghua University in 2000 and 2005, respectively. After Post-doctoral work at Stanford University, he joined State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology in 2008. His main research interests focus on separation and assembly of inorganic nanostructures, synthesis and separation of carbon nanomaterials and their composites and structure control, opto-/electro-property investigations of nanoarrays and  superwetting micro-/nanostructure electrodes for energy sciences. He has authored 63 journal articles (e g. J. Am. Chem. Soc., Angew. Chem. Int. Ed., Adv. Mater., ACS Nano) which have been cited >4600 times.

Abstract:

Electrochemical gas-involved reactions can be divided into two types: gas-evolution reaction and gas-consumption reaction, both of which are crucial for a variety of energy conversion processes and industries (e.g. HER and ORR). For gas-evolution reaction, if generated gas bubbles pin at the electrode surface and cannot escape from the surface in time, the accumulated bubbles will reduce the effective electrode surface area, increase diffusion resistance and enlarge polarization effect, resulting in more energy consumption. How to construct a novel electrode to promote gas bubble release is critical for improving the electrochemical efficiency besides activity improvement. Inspired from bio-inspired superwetting surfaces, we found that the interface behavior of electrode could be tuned by surface architecture construction, for example, transferring from aerophobic to superaerophobic by engineering a series of micro-/nanostructured electrode, e. g. MoS₂, pine-shaped Pt, NiFe LDHs and Cu films. This kind of superaerophobic electrodes could decrease the critical size of gas overflowing from the surface by cutting the three phase contact lines into discontinue dots, and thus reduce the diffused impedance and maintain the integrity of the solid−liquid interface that is necessary for electrocatalysis (e.g. water splitting and hydrazine fuel cells). On the other hand, for gas-consumption reaction, the construction of micro-/nanostructured “superaerophilic” electrode could accelerate gas diffusion to reaction zone via gas-phase to solve the issue of low solubility and slow diffusion of gases in traditional electro catalysis reaction system with limited current density (e g., ORR).  Therefore, the construction of superwetting electrodes is imperative to improve gas transport at electrodes surface and to enhance activity and stability of electrodes.

Biography:

Sanjeev P Maradur has completed his PhD from Shivaji University Kolhapur, India in 2006 and worked as Research Scientist in Jubilant Life Sciences Ltd, Noida, India. He then moved to South Korea in 2009 for his Post-doctoral studies to work with Prof. R Ryoo at Center for Functional Nanomaterials, Korea Advanced Institute of Science and Technology (KAIST), and Prof. K S Yang at Alan MacDiarmid Energy Research Institute (AMERI), Chonnam National University, Gwangju Republic of Korea. He then moved to University of Oklahoma at Norman to work with Prof. Kenneth M Nicholas on catalytic conversion of biomass derived polyols to olefins. He is presently Asst. Professor at Poornaprajna Institute of Scientific Research, Bangalore, India. He has published more than 15 papers in reputed journals and two patents to his credit. He has guided 2 MTech students and 3 graduate students are presently working in his group. He is a recipient Young Scientist Research Award from Government of Karnataka, India. He is the Co-Investigator for industry project sponsored by GTC Technology Inc, USA and Hindustan Petroleum Corporation Ltd, India.

Abstract:

Acetalization of glycerol with acetone is very significant reaction for synthesis of solketal (2, 2-dimethyl-4- hydroxymethyl-1, 3-dioxolane). Solketal can be used as an additive in formulation of diesel, biodiesel and gasoline fuels. It decreases the viscosity, improves cold properties and provides the required flash point to the biodiesel. These oxygenated products when blended with the diesel fuel curtail the uncontrolled emission of carbon monoxide, particles, hydrocarbons and aldehydes. Challenge in the synthesis of glycerol derivatives is the formation of by-product water which hinders the catalytic activity in case of silica due to low hydrothermal stability and commercial resins being too hydrophilic. Moreover, the commercial resins are not characterized by well-defined pores. Diffusion limitation and polymer swelling remain as disadvantage despite the development of large-pore resins, low-swelling polymers. In this work, sulfonic acid functionalized mesoporous polymer catalyst (MP-SO₃H) was prepared by post synthetic modification of mesoporous polydivinylbenene by incorporating sulfonic acid moiety using conc. H₂SO₄. The synthesized materials were characterized by using several physicochemical techniques and their performance was evaluated for room temperature liquid phase acetalization of glycerol with acetone. MP-SO₃H catalyst performed better than other conventional solid acid catalysts with 94 % glycerol conversion and 98.5 % selectivity for solketal. The high activity of MP-SO₃H catalyst can be attributed due to facile diffusion of reactants and products in the mesoporous environment together with an optimized balance of acid functionalization. Glycerol conversion increased with increase in the total acidity of the catalyst. Amount of acidity and surface density of (H⁺) ions were found to have a direct correlation with catalyst performance.

Biography:

Ganapati Shanbhag has completed his PhD from National Chemical Laboratory, Pune, India in 2008 and 2-year Post-doctoral studies from Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea. He is presently Asst. Professor at Poornaprajna Institute of Scientific Research, Bangalore, India. He has published more than 35 papers in reputed journals and has been serving as an Editorial Board Member of Journal of Catalyst and Catalysis. He has guided 3 PhDs and 3 MTech theses. He is the Principal Investigator for industry projects sponsored by GTC Technology Inc, USA and Hindustan Petroleum Corporation Ltd, India.

Abstract:

Increasing demand for petroleum fuels and depleting availability of crude oil has made to look for alternative sources of energy. Biodiesel is one such source which attracted many researchers since it can be synthesized by transesterification of vegetable oil in presence of an acid or a base catalyst. To overcome the issues related to homogeneous catalysts like NaOH, heterogeneous acid-base catalysts were developed to make an eco-friendly process of biodiesel synthesis. Further, to improve the economics of the process, the byproduct glycerol can be converted into value-added chemicals like acetins and glycerol carbonate via transesterification and carbonylation reactions respectively. In this work, a novel metal hydroxystannate was reported as a strong base catalyst for organic transformations. It has a perovskite type crystal structure with metal atoms octahedrally coordinated with corner sharing hydroxyl groups to form Sn(OH)₆ and M(OH)₆ octahedra (where M is Ca, Zn, Mg or Sr). It is found that calcium hydroxystannate acts as a strong solid base catalyst with very high activity for biodiesel synthesis from vegetable oils and synthesis of acetins from glycerol. On the other hand, zinc hydroxystannate acts as bifunctional acid-base catalyst with hydroxy groups contributing as basic sites and zinc as Lewis acid center. This catalyst was successfully applied for glycerol carbonylation with urea to make glycerol carbonate. Further, calcination of metal hydroxystanntes at high temperatures resulted in metal composite oxides which also found to exhibit good acidity and basicity which are successfully applied for glycerol transformation reactions.

Biography:

Imeda Rubashvili has completed his PhD from Georgian Technical University and Post-doctoral study from the University of Liege. He is a Scientific Researcher at Ivane Javakhishvili Tbilisi State University and the Head of Validation department of pharmaceutical company “Aversi-rational” Ltd. He has published more than 25 scientific papers and has participated in more than 30 international scientific conferences. He is the member of the council of young scientists of the Georgian National Academy of Sciences.

Abstract:

The manufacture of food products and dietary supplements using natural food pigments and other different natural compounds has been attracted attention in the field of modern food industry. One of the necessary and interesting natural compounds are carotenoids which show strong antioxidant and immunomodulation activities and may prevent degenerative diseases as well. The present research concerns the development and validation of a new, rapid, modern, effective and selective HPLC method for determination of carotenoids – beta-carotene and lycopene in organic extracts obtained from tomato, tangerine and orange agro industrial waste materials using extraction techniques-supercritical fluid and sequential ultrasonication-assisted extractions. The method was developed using RP-18 end-capped LiChroCART 4 x 250mm, 5μm column. The method was validated with respect to robustness, system suitability test, specificity, linearity-range, accuracy, precision, limit of detection (LOD) and quantitation (LOQ). The LOD and the LOQ are 0.081µg/mL and 0.041µg/mL for beta-carotene, 0.034µg/mL and 0.085µg/mL for lycopene, respectively. The content of each carotenoid per 1 g of dried local agro industrial waste material varies for beta-carotene 0.290-10.030 µg (tomato peel), 0.445-3.972 µg (tangerine peel), and 0.833-2.455 µg (orange peel) and for lycopene 0.418-143.79 µg (tomato peel), 0.051-179.988 µg (tangerine peel), 0.091-0.114 µg (orange peel). 

Biography:

Prof. Y. Walid Bizreh harvested twelve different scientific patents relating to the diverse fields of Chemistry; four of which were presented, examined and passed successfully as novelty by WIPO; WIPO is the World Intellectual Property Organization. Dr. Bizreh has authored eight books that are core curriculum in different universities in the Mediterranean region and participated in translating others. Dr. Y. Walid Bizreh has completed his PHD at the age of 33 years from the Moscow State University. Prof. Bizreh was a visiting scientist at the University of Delaware, DE, USA at the Center of Catalytic Science and Technology in 1981 and 1982. He has been a professor of physical and surface chemistry at Damascus University since 1969. In addition to his books, Dr. Bizreh has published over twenty papers, harvested 12 patents, supervised four PHDs, and supervised nine master dissertations. Prof. Bizreh was the chief editor of the Damascus University Journal of Essential Sciences between the years of 1999-2001.

Abstract:

Researches on car exhaust gas pollutants require accurate information particularly those of kinetics of catalytic reactions concentrating de-NO, de-NOx and de-CH, that take place in catalytic converters connected directly with the engine of the motor car. Unstable velocity of out coming flow gas from car exhaust of the main impediment to be overcome in order to determine the desired kinetic parameters. Therefore, we have constructed a laboratory pilot plant, data obtained by means of which have been proved to be in accord with the kinetic equation for the pulse flow catalytic reactions. This pilot plant has been repeatedly used and determine the kinetic parameters and catalytic activity for new 11 catalysts prepared by us from metal oxides supported by matrix of Syrian natural zeolite, Jordanian natural zeolite, and Syrian bentonite. The DTA diagrams indicated characteristic indothermal and exothermal effects. The adsorption- desorption of N2 measurements were carried out at -196 C. In addition to FTIR studies.

Biography:

Deb Narayan Nath is currently working as Professor in Indian Association for the Cultivation of Science, India.

Abstract:

In the literature the role of viscosity on the magnetic field effect (MFE) on radical ion pair (RIP) system has been studied mainly by flash-photolysis experiment through monitoring the escape products and the inter system crossing (ISC) being taking place via ∆g mechanism. In this work we have studied the effect by monitoring the singlet exciplex luminescence of pyrene-N, N, di-methylaniline (Py-DMA) system. The Noyes approach of classical Smoluchowksi equation of stochastic motion states that as the diffusivity increases, the recombination probability of geminate RIP should increase. We know that to have MFE the RIP must diffuse out to the extent of S-T degeneracy where hyperfine interaction (HFI) induced ISC can be operative and at the same time to observe the effect on singlet exciplex luminescence there should be also appreciable recombination probability. The role of diffusivity on MFE thus mainly depends on the relative distances of RIP generation and recombination. Burshtein et al has considered the spatial dispersion of free energy (ΔG) and reorganization energy (Er) and the simplified concept of exponentially decreasing CT probability W(r) (according to Marcus) changes to bell shaped curve (non-monotonous, the probability is maximum not at contact but at a certain distance) for both ionization [WI(r)] and recombination [WR(r)]. According to Burshtein model; at very high diffusivity when the system is kinetically controlled the transfer is approximated to be contact. Whereas, when ionization is controlled by diffusion (under viscous condition) the spherical reaction layer, where ions are mainly born (rg), is shown to have a greater radius than the closest approach distance. Burshtein model predicts opposite slope of MFE with diffusivity in the kinetically controlled and diffusion controlled regime.

Biography:

Phoebe Farag Allah Lamie has completed her PhD from Beni-Suef University, Egypt and Post-doctoral studies from the same university. She has published about 9 papers in different international journals.

Abstract:

Sixteen new phthalimide derivatives were synthesized and evaluated for their
in vitro anti-microbial, anti-oxidant and anti-inflammatory activities. The cytotoxicity for all synthesized compounds was also determined in cancer cell lines and in normal human cells. None of the target derivatives had any cytotoxic activity. (ZE)-2-[4-(1-Hydrazono-ethyl) phenyl] isoindoline-1, 3- dione showed remarkable anti-microbial activity. Its activity against Bacillus subtilis was 133%, 106% and 88.8% when compared with the standard antibiotics ampicillin, cefotaxime and gentamicin, respectively. (ZE)-2-[4-(1-Hydrazonoethyl)phenyl]isoindoline-1,3-dione also showed its highest activities in Gram negative bacteria against Pseudomonas aeruginosa where the percentage activities were 75% and 57.6% when compared sequentially with the standard antibiotics cefotaxime and gentamicin. It was also found that the compounds 2-[4-(4-ethyl-3-methyl-5-thioxo-1,2,4-triazolidin-3-yl)phenyl]isoindoline-1,3-dione and 2-[4-(3-methyl-5-thioxo-4-phenyl-1,2,4-triazolidin-3-yl)phenyl]isoindoline-1,3-dione had anti-oxidant activity. 4-(N'-{1-[4-(1, 3-Dioxo-1, 3-dihydro-isoindol-2-yl)-phenyl]-ethylidene}-hydrazino)-benzenesulfonamide showed the highest in vitro anti-inflammatory activity of the tested compounds (a decrease of 32%). To determine the mechanism of the anti-inflammatory activity of 4-(Nʹ-{1-[4-(1, 3-dioxo-1, 3-dihydro-isoindol-2-yl)-phenyl]-ethylidene}-hydrazino)-benzenesulfonamide, a docking study was carried out on the COX-2 enzyme. The results confirmed that the latter had a higher binding energy score (-17.89 kcal/mol) than that of the ligand celecoxib (−17.27 kcal/mol).

Biography:

John N Phillopes has completed his PhD from Beni-Suef University, Egypt and Post-doctoral studies from the same University. He has published many papers in different international journals.

Abstract:

Three new series of thiazoles, quinolones and thiazolidinones merged with benzimidazole, benzoxazole and benzothiazole nuclei were synthesized. All the prepared compounds were subjected to IR, ¹H NMR, ¹³C NMR, mass spectral data and elemental analyses. Cytotoxic activity of the synthesized compounds was evaluated against two different types of cancer cells, breast (MCF-7) and colon cancer (HCT-116) cell lines. Seven compounds showed potent cytotoxic activity compared with doxorubicin, the reference drug with IC₅₀ between 0.0125-0.0198 µM.

Biography:

D. A. El-Gayar has completed her PhD at the age of 30 years from Alexandria University Faculty of Engineering And finished MSc Chemical Engineering At the same university 2009. She is Lecturer at Chemical Engineering Department,Alexandria University,She is Instuctor for Process control course & Renewable Energy Resources course,she is member in the executive office of Qulity Assurance Unit in faculty of Engineering, she works in Alex Uni. Team in a Trinex project funded by Tempus as one of the parters of the project . She has published 2 papers in international journals and 2 papers are in progress.

Abstract:

Rates of mass transfer at the inner rough surface of an annulus were determined under swirl flow by an electrochemical technique which involves measuring the limiting current of the cathodic reduction of K₃Fe(CN)₆. Roughness was made by cutting longitudinal grooves in the inner cylinder transverse to swirl flow. The variables studied were solution velocity, peak to valley height of the roughness element, physical properties of the electrolyte, active length of the inner cylinder and the effect of drag reducing polymers. The rate of mass transfer was found to increase with increasing swirl flow velocity and the degree of surface roughness. Mass transfer data at smooth and rough surfaces were correlated by dimensionless correlations. Drug reducing polymers were found to decrease the rate of mass transfer by an amount ranging from 5 to 23%. Implication of the present results for the design and operation of high space-time yield annular and catalytic reactors used to conduct diffusion controlled reactions such as electro organic synthesis; electrochemical waste water treatment; photo catalytic reactions and immobilized enzyme catalyzed biochemical reactions etc. were highlighted. The importance of the present results in designing more efficient annular membrane equipment's with inner corrugated membrane to conduct processes such as reverse osmosis, dialysis and ultra-filtration under swirl flow was pointed out. By virtue of the analogy between heat and mass transfer the importance of the present results in designing more efficient heat exchanger was noted.

Biography:

Maolin Guo completed his PhD in 2000 from Edinburgh University and postdoctoral studies from University of California Irvine. He joined the faculty of University of Massachusetts Dartmouth in 2004 and has been a full professor since 2014. He is the director of UMass Cranberry Health Research Center and a co-director of the Biomedical Engineering and Biotechnology PhD program at UMass Dartmouth. He has published more than 60 papers in reputed journals and has been serving as an editorial board member of a few international chemistry journals.

Abstract:

Iron is the most abundant essential transition metal found in the human body and it plays crucial roles in many fundamental physiological processes including oxygen delivery and DNA synthesis.  However, iron can also catalyze the production of free radicals, which are linked to quite a few diseases such as cancer, neurodegenerative diseases and cardiovascular diseases. Both iron deficiency and iron overload are related to various health problems. Thus, precisely monitoring iron ions (Fe²⁺ and Fe³⁺) in biological systems is important in understanding the detailed biological functions of iron and its trafficking pathways. However, effective tools for monitoring labile iron ions in biological systems have yet to be established. In our recent efforts in developing turn-on and ratiometric fluorescent sensors based on “Coordination induced fluorescent activation (CIFA)” and “Coordination induced fluorescence resonance energy transfer (CIFRET)” mechanisms, a series of profluorescent sensors which can selectively detect Fe³⁺, Fe²⁺ Cu²⁺, Hg²⁺ or oxidative stress promoted by Fenton chemistry have been developed. Our highly selective and sensitive iron sensors enabled the molecular imaging of the endogenous exchangeable Fe³⁺ and Fe²⁺ pools and their dynamic changes with sub-cellular resolution in living cells. Moreover, our recently developed iron sensors suggested a novel intracellular iron transport pathway and enabled the absolute quantification of the labile iron levels in sub-cellular compartments. These novel probes provide new tools for further studying the cell biology of iron and its connections to diseases.

Biography:

Dr. Sayak Bhattacharya has completed his PhD at the age of 28 years from Indian Institute of Technology and postdoctoral studies from University of New Mexico, USA. He has served as the Head of the Dept., Dept. of Chemistry, Veltech University, Chennai, India. Currently he is a Professor at Galgotias University, New Delhi, India. He has published 10 papers in reputed journals in the field of theoretical and computational chemistry. He is currently working on molecular dynamics of ion-molecule complex systems and also in the field of bioinformatics involving micro RNAs.

Abstract:

According to the standard Big Bang model, the HeH+ ion is believed to be the first molecule to be formed in the Universe. This makes the ionic system a storehouse of immense information on the mystries surrounding the creation of the Universe and a subject of intense research in the field of astrophysics. Although HeH+ is expected to be observable in a variety of astrophysical environments like gaseous nebulae and in planetary nebulae, none of the several attempts to observe its extraterrestrial presence have been conclusive. The fact that HeH+ eludes observation means that either the mechanisms of creation of HeH+ are overestimated or that the mechanisms of its destruction are underestimated. This brings into focus the importance of knowledge about the accurate dynamics of the reaction of HeH+ with He, where a proton is transferred from one heavy atom (helium) to another heavy atom (helium) and the stability of the He2H+ dimer. The multiconfiguration time-dependent Hartree (MCTDH) approach has been employed to exhaustively study the reaction dynamics of the He + HeH+ reaction on the Panda-Sathyamurthy potential energy surface. The importance of the initial orientation of the reagents and the presence of preferred pathways of approach in the reaction dynamics of this system has been underlined in the present work.

Biography:

Dirk Kuckling has completed his PhD from the CAU Kiel, Germany. He further performed research at TU Dresden, Germany and Stanford University, USA. Since 2008 he is full professor for Organic and Macromolecular Chemistry at the University of Paderborn, Germany. He has published more than 130 papers in reputed journals and has been serving as an editorial board member of repute.       

Abstract:

Vegetable oils are biorenewable triglycerides of fatty acid extracted from plants. The utilization of vegetable oils as renewable resource in polymeric material application has attracted significantly increasing attention due to their renewability, low cost, low toxicity, inherent biodegradability and versatile functionality. The fatty acid composition of different vegetable oils depends on the plant and growing conditions. However, in the unsaturated structure the first double bond is invariable located between 8^th and 9^th carbon, which is independent of the fatty acid type.[1] There are several methods to convert the unsaturated fatty acid to functionalized monomers. Utilization of ozonation technology for double bound cleavage followed by reductive or oxidative workup can give A₃ monomers with defined structures.[2] In this work, trialcohol, trialdehyde and triacid were synthesized by employing ozonolysis of castor oil and soybean oil. Using these A₃ monomers, a variety of hyperbranched polymers, such as hyperbranched polyester (HBPE), hyperbranched polycarbonate (HBPC), hyperbranched polyacetal (HBPA) etc., were successfully prepared by A₃+B₂ condensation polymerization. The resulting hyperbranched polymers were characterized by NMR spectroscopy for endgroup analysis, size exclusion chromatography (SEC) for molar masses and differential scanning calorimetry (DSC) for thermal properties.

Biography:

Keisham Surjit Singh has completed his PhD from North Eastern Hill University, Shillong, India and then joined as Lecturer in the Department of Chemistry, NERIST, Arunachal Pradesh, India. In 2010, he joined as Assistant Professor in National Institute of Technology, Agartala, India. He has published more than 20 papers in reputed journals like New Journal of Chemistry, Inorganica Chimica Acta, Journal of Organometallic Chemistry, etc. He acts as reviewer for Medicial Chemistry Research, Complex Metals, etc., and has been serving as an Editorial Board Member of International Journal of Scientific and Engineering Research.

Abstract:

Triorganotin(IV) complexes of azo-carboxylic acids were synthesized by the reaction of 2/4-(2,4-dihydroxy-phenylazo)-benzoic acids with appropriate triorganotin(IV) chlorides [R= Me for compounds  Me₃SnH₂L¹ and Me₃SnH₂L²;  Ph for compounds  Ph₃SnH₂L¹ and Ph₃SnH₂L² and Bu for compound Bu₃SnH₂L²] in presence of triethylamine. The characterization of the complexes was accomplished by elemental analyses, UV, IR and multinuclear (¹H, ¹³C and ¹¹⁹Sn) NMR spectroscopy. Structure of Me₃SnH₂L² was established by X-ray crystal structure analysis. X-ray crystal structure of Me₃SnH₂L² revealed that the compound exhibits a 48 membered macrocyclic-tetrameric structure with trigonal bipyramidal geometry around the tin atoms in which the three methyl groups occupy the equatorial positions while the apical positions are being occupied by the oxygen atom of carboxylate group of one ligand and the phenoxide oxygen atom of another ligand. All the complexes display a sharp singlet ¹¹⁹Sn resonance in the range specified for the four coordinate structures suggesting that complexes havee tetrahdral structures in solution. The five coordinate structure of the complexes in solid state dissociated into monomeric species with four coordinate structures in solution. Anti-diabetic activities of the complexes were studied and the results showed that the synthesized compounds exhibited effective activity even higher than the standard compound acarbose.

Biography:

Ukiwe Lugard Luke Nnabugwu is a Senior Lecturer in the Dept. of Chemistry, Federal University of Technology, Owerri, Nigeria. He specialized in Environmental Chemistry, with bias in Environmental Pollution and Control. He has authored and co-authored more than 65 publications in reputable journals and has served as Reviewer to a number of journals.

Abstract:

The present research investigated the synthesis of a novel adsorbent by combining Moringa oleifera and silver nitrate (AgNO₃). The chemical components of the pre-adsorbent and adsorbent material were characterized using Fourier Transform infrared Spectroscopy (FTIR), while the equilibrium adsorption capacity (Qe) obtained for Copper (Cu), Manganese (Mn) and iron (Fe) were 0.042, 0.039 and 0.041 respectively. These results indicated that the adsorbent was able to remove Mn more than Cu and Fe from the aqueous salt mixture. However, the results observed for the biofilm experiment revealed that the M. oleifera-AgNO₃ biocidal action was effective in deactivating oxidizable components in the wastewater system after 8 days. The above findings have demonstrated that the synthesized M. oleifera-AgNO₃ adsorbent would be effective in cleaning-up waste streams contaminated with microbes and trace metals.

Biography:

Abdelnasser Mabrouk works as a Scientist at Water Desalination department, Qatar Environment & Energy Research Institute, Qatar. He is a specialist in the process design and techno-economics of thermal water desalination process. He has an industrial experience in desalination plant process design. He led several R&D projects during his work in Doosan Heavy Industries, Desalination R&D Center (UAE) to improve the thermal/membrane desalination technology (MSF, MED, RO, NF and FO) for market competence. He published several publications (30 papers) in reputed journals and also presented his research work in international conferences (24 papers). He published a book and 3 book chapters. He has 4 US provisional patents, GCC patent and 5 IP disclosures in the desalination process development.

Abstract:

This work presents a novel tube bundle arrangement of MED evaporator.  The tube bundle is arranged to allow the generated vapor to flow in a smooth path and minimized route to reach the next effect. This route is designed in order to avoid shear loss to avoid breakdown of film liquid around tubes (dry zones) as a result not abruption the heat transfer process. Also this route will eliminate the vapor entrainment which reduce the brine carry over since there is no cross flow; consequently, there is no need for the demister. Also, the novel route is target to eliminate vapor boxes and directed the generated vapor in the current effect to the next effect through holes in the tube sheet. Also the holes of the tube sheets make sure the vapor is uniform distribution before the entrance to the next tubes bundle which eliminates the entrance loss. Process design calculations using VSP software showed that, for the same gain output ratio (GOR=9), the required heat transfer area of novel evaporator is 22% lower than that of existing evaporator.  This is due thermal losses reduction (demister loss and vapor box loss) in the novel MED evaporator. The thermal loss reduction in the novel evaporator varies from 20% to 50%.  Due to removal of demister in the novel MED evaporator, the evaporator width decreases by 65% however the novel evaporator height is almost double of the existing evaporator. The novel evaporator length is 6% lower than the existing evaporator. Due to reduction in the novel evaporator width and length, the foot print decreases by 65% lower than the existing evaporator. The cost of tubes of the novel evaporator is 18% lower than the traditional MED. This is mainly due to reduction in heat transfer area as a result of improvement of heat transfer process.  Also, the shell material of the novel evaporator is 24% lower than that of the traditional MED-TVC. This is due to significant reduction in the evaporator width as a result of removing demister. The new design will minimize the thermal losses inside evaporator which will reduce the required heat transfer area and get a compact evaporator size. The expected reduction in heat transfer area not only reduces the capital cost of evaporator manufacturing but also will reduce the foot print of the MED desalination plant significantly.

Biography:

Jane Catherine Ngila has a Bed (Sci) and MSc (Chemistry) from Kenyatta University (KU), Kenya (1986 and 1992) and PhD from UNSW Australia (1996). She worked as a tutorial fellow/Lecturer at KU from 1989-1997 and as a Lecturer/Senior Lecturer from 1998-2006 at University of Botswana. She also worked as Senior Lecturer from 2006-2011 at University of KwaZulu Natal and as Professor of Chemistry at University of Johannesburg (UJ) in April 2011. She has taught various courses in Analytical/Environmental Chemistry and research in water quality monitoring and treatment using nanocomposite membranes; modelling mass balance in wastewater treatment plants. She has published more than 100 journal articles and graduated more than 50 postgraduate students.

Abstract:

We report dechlorination of mixed pesticides (dieldrin, chlorpyrifos, diuron and fipronil) using Fe-Pd nanoparticles anchored on acrylic acid (AA) grafted mesoporous silica (MS) membrane as inert support designated as (Fe-Pd/MS-g-PAA). Nanocomposites made up of inorganic nanoparticles give enhanced performance due to their high surface area to volume ratio. When Fe-Pd is loaded on MS-g-PAA substrate, the costly post-treatment and filtration processes associated with powdered materials are eliminated. Chlorinated pesticides are manufactured in large quantities primarily for eradication of pests in agriculture. However, they finally end up in our soils, food and water sources. These pesticides are cholinesterase inhibitors and their adverse health effects manifest in the nervous, immune and endocrine systems. Therefore, their removal from contaminated water is necessary. Bimetallic iron-palladium nanoparticles immobilized on MS-g-PAA were used for their dechlorination to benign products. The loading of Fe-Pd was done by adding 1 g MS-g-PAA to a ferrous sulfate solution followed by reduction with NaBH_4. The precipitate was then added to palladium acetate solution, reduced, filtered, washed and dried. The composite was characterized using FTIR, XRD, SEM, BET and TEM and chemical analysis was done using GCxGC-TOFMS. The results obtained show that 95 to 99% of dieldrin, chlorpyrifos and diuron were dechlorinated in 60, 120 and 180 minutes respectively, while for fipronil, it took 180 minutes to reach 90%. The data was processed to obtain kinetic parameters. However, mineralization rate (m_r) was low at 36%, 45%, 43% and 45% for chlorpyrifos and dieldin, fipronil and diuron, respectively.

Biography:

Aleksandr Ketov completed PhD and is a Professor in Inorganic Materials research and Chemical Engineering. With over 25 years of professional experience in material research and inorganic chemistry, he is a Candidate of Science degree (corresponding to PhD) from the Institute of Technology (St-Peterburg) and has obtained the full Doctor and Professor Positions from the Perm State Technical University. He has more than 30 patents of Russia and more than hundred other written works.

Abstract:

Porous glasses with closed cell structure and densities lower than 250–300 kg m^–3 are rather attractive as functional heat-insulating materials. It was found the possibility of obtaining low-density cellular silicate materials by the hydrate mechanism due to the stronger gas evolution in the course of the redox reaction between water vapor and carbon. The research results were obtained by synchronous thermogravimetric and MS analysis, SEM, X-ray phase analysis. It was found that raising the number of Na⁺ ions in the raw silicate formulation leads to an increase in the amount of bound water removed at thermal plasticity temperatures of sodium-calcium glasses (973–1073 K). The redox reactions between steam and carbon in synthesis of a cellular silicate material favor an increase in the gas evolution and a decrease in the density of the material obtained. Synthesis of glass from hydrated polysilicates in the intergrain space of dispersed glass can be used to obtain foamed-glass materials and secondary use of a low-grade sodium-calcium glass. The presented method of obtaining cellular material can use any glass wastes as a raw without extra cooking and to obtain the material similar to the commercial foamed glass of blocked and granulated types. The use of non-powder preforms enables applying efficient technological methods in production and obtaining products with new properties such as large-size items, colored ones or those acceptable for facing and also light-weight construction mixes. The applications of obtained materials are presented and discussed.

Biography:

O Tafat-Igoudjilenê is a Professor in Chemistry at the University of Science and Technology Houari Boumedienne, Àlgeria. She has published l0 papers in reputed journals (in Thermodynamic) and has participated in several international conferences in Chemistry.

Abstract:

The purpose of this work was to determine the vapor-liquid equilibrium, of heptan-2-one+1,4-dichlorobutane or l,6-dichlorohexane with view to study the effect of specific interaction (carbonyl-chlorogroup) on the excess Gibbs energies of heptan-2-one+halogenated hydrocarbons. Halogenated hydrocarbons are manufactured in large quantities and have many applications (as refrigerant, organics solvents and medicines). The vapor pressure of the pure compounds and the binary mixtures were measured by means of a static apparatus at temperatures between (263.15 and 343.15) K. The apparatus allows measurements in the P ranging from 27 to 200 10³ Pa and from 258 to 468 K .Vapor pressure was measured by means of pressure gauges (Rosemount, model 1151 DPE 22S2, Minneapolis, Minn, USA), protected by a differential (pressure indicator MKS, Mode1615D, MKS Instruments, USA). The experimental data of excess molar Gibbs energies, G^E, have been compared with values using the DISQUAC group contribution model.

Biography:

In 1996 Dr. MacQuarrie started her academic career at Mount Allison University in Sackville, NB. She completed three years of undergraduate research and published 8 research papers under her academic advisor Dr. Richard Langler. After she completed her BSc she went on to Virginia Polytechnic Institute and State University to do a PhD in organic chemistry. She had discovered a real passion for two things; chemistry and teaching. She decided early on that she would pursue the academic route and become a Chemistry professor. She did her graduate research on design and synthesis of chiral amino acids using a benzodiazepine scaffold with Dr. Paul Carlier. After receiving her PhD in 2005 she accepted a post-doctoral position in Dr. Cathleen Crudden’s research group at Queen’s University in Kingston, ON where she worked on chiral materials and Palladium catalysis. In 2009 Dr. MacQuarrie accepted a position at Cape Breton University as Assistant Professor of Organic Chemistry. Dr. MacQuarrie has a very active research group funded through a 5-year National Science and Engineering Research Council Discovery Grant and multiple industrial research grants (NSERC Engage, Mitacs). Currently, Dr. MacQuarrie has 5 undergraduate students and two post-doctoral researcher working on a variety of projects in her lab ranging from developing reusable, cost effective, greener alternative organic catalysts to investigating unique biomass. She is also a recipient of two Canadian Foundation for Innovation grants. Dr. MacQuarrie has auhored more than 25 peer reviewed papers already in her early career.

Abstract:

Phenylalanine ammonia lyase (PAL, E.C.4.3.1.24) catalyzes the sponstaneous, non-oxidative deamination of L-phenylalanine (L-Phe) into trans-cinnamic acid (t-CA). One of the major clinical applications of PAL is its use in the treatment of phenylketonuria (PKU), a genetic disorder in which there is a deficiency or absence of phenylalanine hydroxylase.1-3 The absence of phenylalanine hydroxylase results in an increase of L-Phe in bodily fluids (phenylalaninemia). High levels of L-Phe can be controlled following a very strict diet restricting all phenylalanine sources. Unfortunately, L-Phe is found in high concentrations in many foods such as grains and grain products, meat and meat products and dairy and eggs. In large concentrations L-Phe is a neurotoxin and therefore, if not detected and controlled with an extremely strict diet, PKU results in severe neurological disorders before the age of one.2,4,5 Although the direct administration of PAL may appear to be a suitable treatment for PKU, PAL is very unstable and denatures at room temperature.6 There is a critical need for the development of a simple method for PAL stabilization. PAL was entrapped in ultra-large-pore mesoporous silica (ULPS) (23 nm pore diameter) generating a recyclable, separable biocatalyst. The entrapped ULPS-PAL materials showed excellent stabilization, even after significant exposure to prolonged heating. Additionally, the entrapped ULPS-PAL materials showed extremely high catalytic activity in the deamination of L-phenylalanine to trans-cinnamic acid in aqueous solution and were recovered and recycled up to five times without any observable loss in activity. This approach is simple and capitalizes on the facile synthesis and easy recoverability of mesoporous silicas to generate a stable, reusable PAL based biocatalyst.

Biography:

Akira Katayama is a PhD course student from H Masuda’s group of Nagoya Institute of Technology and is a JSPS Research fellow (DC2). He received Master of Engineering and Bachelor of Engineering from the same institute.

Abstract:

An ionic liquid, which is a salt in a liquid state under ambient conditions, has recently been employed in a number of different research fields, because it has several unique properties such as low volatility, large electrochemical window, high thermal and chemical stabilities, and high electric conductivity. The reduction of small molecule, such as CO_2, O₂, in ionic liquid has been researched because the reactivity is different from that in conventional organic solvents. On the other hand, the reduction of N₂ in ionic liquid has never been reported. We have reported the first example of the electrochemical reduction of N₂ to NH₃ using the W E coated with Cp₂TiCl₂–supported ionic liquid under ambient conditions.  In this study, we used the ionic liquid, 1−butyl−1−methylpyrrolidinium tris (pentafluoroethyl) trifluoro−phosphate ([C₉H₂₀N]⁺[(C₂F₅)₃PF₃]^–), which is appropriate for use as a supporting material, because of its high chemical stability. When the controlled potential electrolysis was carried out at -1.5 V (vs. Ag/AgCl), the yield of NH₃ per Cp₂TiCl₂ and current efficiency were 27% and 0.2%, respectively, which are significantly higher in comparison with those reported previously. In this paper, we will report the controlled potential electrolysis by Cp₂TiCl₂^- supported [C₉H₂₀N]⁺ [(C₂F₅)₃PF₃]^– under other experimental conditions.

Biography:

Pawanpreet Kaur is pursuing PhD under the supervision of Dr. Raghubir Singh in Department of Chemistry, DAV College, India. Her area of research is “Monitoring of metallic toxins using azomethinic cyclic and semi-cyclic receptors”.

Abstract:

An “off-on-off” type tripodal Schiff base chemosensor derived from condensation of tris(2-aminoethyl)amine and 2-hydroxynaphthalene-1-carboxaldehyde exhibiting pronounced fluorescence signaling for Zn²⁺ and Cd²⁺ as well as chromogenic response towards Fe³⁺, Fe²⁺, Zn²⁺ and Cd²⁺ ions has been explored herein. The sensor can be considered as molecular switch which turns “ON” upon selective binding with Zn²⁺/Cd²⁺ ions and “OFF” in the simultaneous presence of Zn²⁺/Cd²⁺ and IO₄^- ion. The addition of metallic cations induces a remarkable colorimetric response from yellow to colorless (for Zn²⁺, Cd²⁺), purple (for Fe³⁺) and light green (for Fe²⁺). Therefore, the sensor can easily differentiate two states of iron (Fe³⁺ from Fe²⁺) by revealing distinctive colors. In addition, the detection limit of the sensor towards Zn²⁺/Cd²⁺ was slowed down to nanomolar concentration. Thus, it is potentially significant sensor and can be applied to both the environment and biological systems.

Biography:

Zaw Ye Maw Oo has completed his PhD from D. Mendeleev University of Chemical Technology of Russia. Currently, he is attending Post-doctoral studies in that university. He has published more than 5 papers in reputed journals.

Abstract:

Porous materials are commonly used as catalyst supports in the processes of oxidation, hydrogenation and dehydrogenation at high temperature, corrosion in feed processing - corrosive environments at endothermic and exothermic reactions in particular, for this purpose, various types of corundum materials with high chemical inertness. Porosity materials due to the high porosity and the peculiar structure have specific properties dramatically different from those of the corresponding chemical composition of dense materials. There was obtained a highly porous cellular material of alumina carriers for catalysts. The filler used to be electro corundum, as reinforcing filler, forming on fire a bundle used porcelain. The samples were prepared by impregnating the ceramic slurry polyurethane foam (PUF), followed by drying and calcining at 1450°C. The porosity after firing was 60-65 %, the compressive strength of 3.5 MPa.

Biography:

Jaswant Singh is currently pursuing PhD under the supervision of Dr. Varinder Kaur and Dr. Raghubir Singh in Department of Chemistry, Panjab University, India. He is potentially working on “Synthesis and characterization of Macrocyclic molecules and their interactions with neuro-toxins”

Abstract:

1-(2-hydroxyphenyl) ethanone synthesized by the condensation of 2-hydroxyacetophenone and ethanolamine has been known as potential ligating molecules for coordinating copper. Herein, it is explored as a receptor to study its optical behavior towards some metallic species via naked eye chemo-sensing, UV-Visible spectrometry and Fluorescence studies using water -methanol (80:20) mixed solvent system. Interestingly, the receptor behaved as a colorimetric switch selectively for Fe (III) species and fluorphore for Zn (II) and Cd (II) species. The optical behavior of receptor molecule (5×10^-4 M) towards Fe³⁺ was in the range 0.05-0.85 mM in water-methanol mixture, which showed a color switch from yellow to red with the appearance of corresponding absorbance bands centered at 329 and 387 nm. Furthermore, receptor molecule “turned on” the fluorescence at excitation of 380 nm with respective emission bands at 451 nm and 448 nm for Zn and Cd. Moreover, the strategies were optimized to determine these metal ions in pharmaceutical samples and environmental natural samples.

Biography:

Petr Ketov has completed graduation from Dmitry Mendeleev University of Chemical Technology of Russia in 2011 and is a Post-graduate student of Perm State Technical University. He has 4 patents of Russia and more than 7 articles in reputed journals. He has about 10 years of professional experience in material research and inorganic chemistry.

Abstract:

Nanocarbon fibers produced by catalytic dehydrogenation of hydrocarbons are considered to be a promising material for solving problems of sorption, catalysis, and construction materials science. However, their synthesis comes across a number of technological and materials science related problems. Method of catalytic dehydrogenation of hydrocarbons to obtain nanocarbon fibers directly on the surface of an inert macroporous support is considered. The specific features and limitations of the method are discussed. It was demonstrated that the method of homogeneous deposition of Ni²⁺ compounds onto the surface of coarsely porous supports enables a uniform distribution of Ni²⁺compounds over the support surface in a dispersity acceptable for further catalytic pyrolysis of hydrocarbons on a material of this kind for obtaining coatings composed of nanocarbon fibers. It was shown that the distribution of Ni²⁺ among the solution, precipitate, and amount deposited onto the support surface in the course of homogeneous deposition in the reaction of carbamide hydrolysis in the presence of soluble Ni²⁺ salts is of a rather complex nature, being determined primarily by temperature, time, Ni²⁺ and (NH₂)₂CO concentrations, and S/V ratio of a support placed in solution. The fraction of Ni²⁺ that is deposited on the support surface and cannot be involved in the pyrolysis process was determined. Every mole of nickel satisfying the hydrocarbon pyrolysis conditions can produce 4230±150 g of carbon as a result of the catalytic pyrolysis of butane.

Biography:

Prof. Dr. Werner Urland received his PhD in inorganic chemistry in 1971 from Giessen University. During his PhD he joined the group of Prof. Lord J. Lewis at the University of London and worked together with Dr. M. Gerloch in the field of magnetochemistry. Afterwards, he spent two years as a postdoctoral fellow at the University Chemical Laboratory in Cambridge in the group of Prof. Dr. A.D. Buckingham doing theoretical chemistry. After his habilitation on magnetochemistry of lanthanide compounds in 1980 he joined the group of Prof. Dr. A. Simon at the Max-Planck-Institute for solid state research in Stuttgart. In 1986 he became a professor for Inorganic Chemistry at the University of Hannover. His current research as a guest professor at the University of Fribourg is focused on the theory of 4f- and 5f-systems.

Abstract:

Phosphors doped by divalent or trivalent lanthanides are in the spotlight of scientific investigation due to possible application via domestic lighting, laser materials or scintillator crystals. Non-empirical calculations are used to design new phosphors by predicting their luminescence properties. The model is based on Density Functional Theory, which is used to parameterize an effective Hamiltonian that includes electrostatic, spin-orbit and ligand field contributions. From this calculations the multiplet energy levels arising from the ground [Xe]4fn and excited [Xe]4fn 15d1 electron configurations of Ln2+ and Ln3+ in their chemical environment are obtained. The results are in good agreement with the experimental investigations, validating the usefulness of the theoretical modelling to understand and characterize the luminescence spectra of phosphors.

Biography:

Khashayar Ghandi has completed his PhD from Simon Fraser University and postdoctoral studies from University of British Columbia. He is the president of the International Society for Muon Spectroscopy , a premier international organization of scientists that develop and use beta detected spin spectrocopy methods for applications in materials science and chemistry. He has published more than 60 papers in reputed journals and has been serving as an editorial board member of journals in the fields of material science, physical chemistry and nanoscience.

Abstract:

Microwave assisted processes are typicaly cobsidered sustainable processes due to efficincy of the microwave heating compared to ordinary methods of heating. In this presentation the current state of the art of the microwave assisted chemistry is reviewed. After this review, two examples of critical analysis of micorowave effects for case studies will be presented. Then a new design for in situ study of microwave free radical reactions and ionic processes is presented and potential applications for chemical and biological processes will be described.

Biography:

Imeda Rubashvili has completed his PhD at the age of 28 years from Georgian Technical University and postdoctoral study from the University of Liege. He is a scientific researcher at Ivane Javakhishvili Tbilisi State University and the head of validation department of pharmaceutical company “Aversi-rational” Ltd. He has published more than 25 scientific papers and has participated in more than 30 international scientific conferences. He is the member of the council of young scientists of the Georgian National Academy of Sciences.

Abstract:

The manufacture of food products and dietary supplements using natural food pigments and other different natural compounds has been attracted attention in the field of modern food industry. One of the necessary and interesting naturals compounds are carotenoids which show strong antioxidant and immunomodulation activities and may prevent degenerative diseases as well. The present research concerns the development and validation of a new, rapid, modern, effective and selective HPLC method for determination of carotenoids – beta-carotene and lycopene in organic extracts obtained from tomato, tangerine and orange agro industrial waste materials using extraction techniques - supercritical fluid and sequential ultrasonication-assisted extractions. The method was developed using RP-18 endcapped LiChroCART 4 x 250 mm, 5 μm column. The method was validated with respect to robustness, system suitability test, specificity, linearity-range, accuracy, precision, limit of detection (LOD) and quantitation (LOQ). The LOD and the LOQ are 0.081µg/mL and 0.041 µg/mL for beta-carotene, 0.034 µg/mL and 0.085 µg/mL for lycopene, respectively. The content of each carotenoid per 1 g of dried local agro industrial waste material varies for beta-carotene 0.290 – 10.030 µg (tomato peel), 0.445 – 3.972 µg (tangerine peel), 0.833 – 2.455 µg (orange peel) and for lycopene 0.418 – 143.79 µg (tomato peel), 0.051 – 179.988 µg (tangerine peel), 0.091 – 0.114 µg (orange peel).

Biography:

Antonio Martins Figueiredo Neto is working as a Professor in the Institute of Physics, University of São Paulo, Brazil.

Abstract:

Lyotropic mixture of potassium laurate/decanol/water presenting only the uniaxial nematic calamitic phase was doped with KCl, DL-mandelic acid, benzoic acid, DL-phenyllactic acid, phenylacetic acid, phenol, phenylmethanol, benzene, RS-hexahydromandelic acid, cyclohexanecarboxylic acid, cyclohexaneacetic acid, cyclohexanol, cyclohexylmethanol and cyclohexane, separately. The nematic phase sequences were investigated as a function of the dopant molar concentration and temperature. Laser conoscopy was used to characterize the nematic phases. Weak electrolytes having –COOH group as polar part were shown to be very effective in stabilizing the three nematic phases (two uniaxial and the biaxial). Guest molecules with only the –OH group did not show any effect on the stabilization of other nematic phases. There is no direct relation between the solubility of the guest molecule in water and its effectiveness to stabilize the different nematic phases. We observed that the guest molecule acidity constant pKa was shown to be an important parameter. These dopants were shown to be more effective in the stabilization of the three nematic phases when comparing to strong electrolytes. We interpreted the results in terms of the location of dopant molecules at the micelle surfaces and their effectiveness of screening the polar head repulsion. This situation favors the relaxing of curved surfaces in the micelle, increasing the flat micellar surfaces. These flat surfaces are perpendicular to the main amphiphilic bilayer. The increase of the micellar dimensions in this plane favors the orientational fluctuations characteristic of the nematic discotic phase, as observed in our experimental results [1]. CNPq, FAPESP, INCT-FCx, TÜBÄ°TAK and BAP.

Biography:

Deb Narayan Nath working as Professor in Indian Association For The Cultivation Of Science, India.

Abstract:

In the literature the role of viscosity on the magnetic field effect (MFE) on radical ion pair (RIP) system has been studied mainly by flash-photolysis experiment through monitoring the escape products and the inter system crossing (ISC) being taking place via ∆g mechanism. In this work we have studied the effect by monitoring the singlet exciplex luminescence of pyrene-N, N, di-methylaniline (Py-DMA) system. The Noyes approach of classical Smoluchowksi equation of stochastic motion states that as the diffusivity increases, the recombination probability of geminate RIP should increase. We know that to have MFE the RIP must diffuse out to the extent of S-T degeneracy where hyperfine interaction (HFI) induced ISC can be operative and at the same time to observe the effect on singlet exciplex luminescence there should be also appreciable recombination probability. The role of diffusivity on MFE thus mainly depends on the relative distances of RIP generation and recombination. Burshtein et al has considered the spatial dispersion of free energy (ΔG) and reorganization energy (Er) and the simplified concept of exponentially decreasing CT probability W(r) (according to Marcus) changes to bell shaped curve (non-monotonous, the probability is maximum not at contact but at a certain distance) for both ionization [WI(r)] and recombination [WR(r)]. According to Burshtein model; at very high diffusivity when the system is kinetically controlled the transfer is approximated to be contact. Whereas, when ionization is controlled by diffusion (under viscous condition) the spherical reaction layer, where ions are mainly born (rg) , is shown to have a greater radius than the closest approach distance. Burshtein model predicts opposite slope of MFE with diffusivity in the kinetically controlled and diffusion controlled regime.

Biography:

Matthew Sheldon received his PhD in Chemistry in 2010 from the University of California Berkeley, From 2010-2014 he was a postdoctoral fellow in the Materials Science and Applied Physics department at the California Institute of Technology. His research centers on the use of nanomaterials for solar energy, as well as related opportunities at the intersection of material science, chemistry and nanophotonics. His work has generated multiple patents relating to optical power conversion, and has been featured in Nature Magazine 'Research Highlights' and on the cover of the IEEE Journal of Selected Topics in Quantum Electronics.

Abstract:

The recent discovery of plasmonic enhancement of non-thermalized, ‘hot’ carrier phenomena in metal nanostructures has prompted significant interest in the fundamental properties and applications of these short-lived, ballistic charge carriers. We describe a new class of metal-semiconductor nanocrystal heterostructures with several ideal compositional and optical properties for probing hot carrier generation and transport. Using colloidal organometallic synthesis techniques in combination with full-wave optical modeling (FDTD method), we have designed and fabricated optimal nanocrystal samples for characterization with photoluminescence excitation (PLE) spectroscopy and dark field microcopy. By systematically mapping the potential landscape that defines the charge transfer dynamics, these optical studies provide fundamental insights into non-equilibrium charge phenomena across nanoscale electronic interfaces, crucial for identifying strategies that best optimize photocatalysis and photoelectrochemical reactions. In particular, these nanocrystals heterostructures exhibit a new mechanism of up-conversion luminescence (UCL), whereby the photo-induced transfer of hot electrical carriers from the metal region over the interfacial Schottky barrier can produce band-edge luminescence in the semiconductor, with energy greater than the incident light. This novel mechanism, which we term ‘hot carrier UCL’, could have potentially significant advantages in applications that benefit from UCL, such as biological imaging, optical energy conversion, and optoelectronic signal processing and data storage. This behavior can also inform fundamental thermodynamic issues related to energy conversion.

Biography:

Hüseyin Özkan Toplan has completed his PhD in 1998 from Sakarya University. He has been working at the Sakarya University, Metallurgy & Materials Engineering, as an academic staff since 1990. He has attended more than 35 national and international conferences. He has published more than 30 papers in reputed journals and his publications have been cited more than 150.

Abstract:

The MgO-Al₂O₃-SiO₂-TiO₂ glass system was prepared by melting method. The crystallization behavior and crystallization kinetics of a sample with glass ceramic composition were examined. DTA and XRD analysis revealed the crystallization of Ca_0.965Mg₂Al₁₆O₂₇ cordierite (Mg₂Al₄Si₅O₁₈) and Fe₂TiO₅ phases. The activation energy for the crystallization of cordierite phase has been evaluated, and the crystallization mechanism has been studied by applying DTA measurements performed at various heating rates. The results indicate that the dominant crystallization mechanism for this system is bulk crystallization dominated by three-dimensional growth. The average calculated values of crystallization and viscous flow for the formation of crystal phases from the glass matrix were measured to be 330 kJmol^-1 and 377 kJmol^-1, respectively.

Biography:

L I Velikanova has completed his PhD and Post-doctoral studies from NWSMU n.a. I I Mechnikov Saint-Petersburg, Russia. He is the Director of research laboratory of chromatography at NWSMU n.a. I I Mechnikov Saint-Petersburg. He has published more than 30 papers in reputed journals and is a researcher interested in the use of chromatography in endocrinology.

Abstract:

We developed the technique of the urinary steroid profiles (USP) generation by gas chromatography–mass spectrometry (GC-MS) and optimized sample preparation procedure and conditions of chromatographic analysis. The enzyme for hydrolysis (64 h, t 37⁰С) was sulfatase from Helix pomatia. Steroids were extracted with chloroform. The efficacy of derivation was increased by enlargement of methoxyamine solution volume in pyridine to 160μL and ТSIM to 500μL for 5ml of urine. 5α-androstanediol was an internal standard for quantitative calculations. 66 steroids by a GC–MS QP2010 ULTRA gas chromatograph–mass spectrometer (Shimadzu, Japan) were determined. 4 types of USP for 32 patients with adrenocortical carcinoma (ACC) are revealed by GC-MS. The difference between them was androgen and glucocorticoid secretion. 15 main ACC features were observed by GC-MS. 100% sensitivity and specificity of ACC and adrenocortical adenoma (ACA) differential diagnosis were achieved by combination of following parameters: THS> 900 µg/24 h and/or DHEA> 1500 µg/24 h with ratios of 3α,16,20-pregnentriol/ 3β,16,20-pregnentriol (3α,16,20dP3 /3β,16,20dP3) less than 6.0 and 3α,17,20dP3 /3β,17,20dP3 less than 9.0 and the detection of non-classical 5-en-pregnens, not found in ACA and healthy persons. Features of 21-hydroxylase and 11β-hydroxylase deficiency were found in 32.2% and in 61.3% patients with ACC respectively. The decrease of activity of 21-hydroxylase in patients with ACA was also found. Probably, it is found one of the pathogenetic mechanisms in the formation of adrenal cortex tumor and malignance.

Biography:

Mustafa Kucukislamoglu has completed his PhD from Karadeniz Technical University. He has been working at the Sakarya University, Chemistry Department as an academic staff since 1999. He has attended more than 30 national and international conferences. He has published more than 40 papers in reputed journals and his publications have been cited more than 350.

Abstract:

The synthesis, reactions and biological properties of substituted coumarins constitute a significant part of modern heterocyclic chemistry. Compounds containing a coumarin moiety display a broad spectrum of biological activities such as antimicrobial, antifungal, anticoagulant, anti-HIV and insecticidal properties. Coumarins are an important class of CAIs for several reasons: (i) they were the first CAIs showing a high selectivity for inhibiting CA isoforms of interest for pharmacologic applications, such as the tumor-associated ones (hCA IX and XII, which are targets for antitumor/ anti-metastatic drugs) or the mitochondrial ones (CA VA and VB, which are targets for anti-obesity agents). 20 thiourea bearing coumaryl-3-carboxamid compounds were synthesized for the investigation of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) activities.

Biography:

Mustafa Arslan has completed his PhD from Cleveland State University. He has been working at the Sakarya University, Chemistry Department as an academic staff since 1998. He has attended more than 35 national and international conferences. He has published more than 40 papers in reputed journals and his publications have been cited more than 400.

Abstract:

Heterocyclic moieties, such as indoles, thiazolidine-4-ones, pyrazoles, piperazines, pyridines, etc., always have considerable attention due to their pharmacological activities. Heterocycles bearing one or more nitrogen and sulfur atoms have received more attention recently. Among the most frequently encountered heterocyclic compounds, thiazole and its derivatives play an important role in nature. The heterocyclic compounds have broad applications including the treatment of hypertension, bacterial and HIV infections, allergies and as antibiotics and ligands for estrogen receptors.  Besides, these compounds have used as inhibitors against fructose 1, 6-bisphosphatase, tumor associated carbonic anhydrase isoforms hCA IX and hCA XII, sphingosine kinase and evaluation of in vitro anticancer activity. 12 sulfonamide bearing thiazole compounds were synthesized for the investigation of carbonic anhydrase enzyme activity.

Biography:

Mustafa Zengin has completed his PhD from Sakarya University. He has been working at same University in the Chemistry Department as an academic staff since 1998. He has attended more than 35 national and international conferences. He has published more than 20 papers in reputed journals and his publications have been cited more than 200.

Abstract:

Nitrogen-containing five-membered heterocyclic compounds are found in the structures of several natural products and pharmaceuticals. Most of them are used as synthetic intermediate products, reactants, ligands or asymmetric synthesis catalysts. Because their many synthesized derivatives are biologically active, thiazolidine has recently become an increasingly used heterocyclic system. We synthesized TCA derivatives and investigated their antibacterial properties on multi-drug resistant (MDR) bacteria. The result showed that TCAs have significant antibacterial activity on Gram-positive (S. aureus) and Gram-negative bacteria (Pseudomanas, Acinetobacter and Escherichia coli).

TCA derivatives are structural analogue of proline. Therefore, it can inhibit bacterial growth by mimicking various essential functions of naturally occurring amino acids. The molecules have been synthesized for antibacterial studies at a high yield using cheap and easily accessible starting materials.

Biography:

Dirk Kuckling has completed his PhD from the CAU Kiel, Germany. He further performed research at TU Dresden, Germany and Stanford University, USA. Since 2008 he is full professor for Organic and Macromolecular Chemistry at the University of Paderborn, Germany. He has published more than 130 papers in reputed journals and has been serving as an editorial board member of repute.

Abstract:

The volume phase transition in stimuli sensitive hydrogels is important for many applications, e. g. as (micro-) actuator and sensors materials, or in controlled cell attachment-detachment and controlled drug delivery. Most investigations focus on temperature or pH sensitive polymers, however, a variety of other parameters (e. g. ionic strength, UV light, magnetic fields etc.) has been studied. The majority of these applications require the use of hydrogels as thin layers at surfaces and interfaces. Therefore, the behavior of bulk hydrogel may not be necessarily extended to these types of geometries. Responsive polymers networks are interesting materials for a variety of different applications due to the fact that they can perform a large volume transition. The possibility to pattern responsive polymer networks makes them useful for application in micro-system technology as well as in biomedicine. The transition behavior of these films showed similar trends to those of the corresponding linear polymers whereas confinement effects have been found for thin hydrogel layers. The ability to optimize the integration of these polymers is critical for the fabrication and development of platforms that harness the unique abilities of responsive polymer networks. Further decrease of the gel size led to the development of colloidal hydrogels with diameters down to 50 nm. Even complex structures like core-shell-morphologies can be prepared. For this purpose block copolymers exhibiting unique properties like the formation of structures in the range from a few nanometers up to several micrometers by self-organization were prepared. A variation of the polymer composition allows controlling the formed structures. Therefore, controlled polymerization methods like atom transfer radical polymerization (ATRP) or nitroxide-mediated radical polymerization (NMRP) are necessary in order to prepare defined blocks.

Biography:

Charafeddine JAMA is professor in thermodynamic and Materials Science with more than twenty years of experience in polymer processing, fire retardancy, corrosion and surface characterization. He is responsabile of the “surface modification processes” team UMET laboratory. He has published more than 100 papers in the field of corrosion, fire retardancy and surface characterization. He is permanent consultant of several companies and coordinator of several national and international projects.

Abstract:

Setting up antimicrobial food packaging by nisin adsorption on plasma-treated surfaces depends on the interactions between the peptides and those surfaces. In order to investigate the factors affecting such adsorption, the native hydrophobic low density polyethylene (LDPE) was modified to generate hydrophilic surfaces using Argon / Oxygen (Ar/O2) plasma, nitrogen (N2) plasma and plasma-induced graft polymerization of acrylic acid (AA). The films were studied by various characterization techniques. The chemical surface modification was confirmed by X-ray photoelectron spectroscopy (XPS), the wettability of the surfaces was evaluated by contact angle measurements, the surface charge was determined by the zeta potential measurements and the changes in surface topography and roughness were revealed by atomic force microscopy (AFM). Nisin was adsorbed on the native and the modified surfaces. The antibacterial activity, the nisin adsorbed amount and the peptide distribution were compared for the four nisin-functionalized films. The roughness measurements highlighted the difference observed between surface topographies before and after nisin adsorption. The highest antibacterial activity was recorded on the Ar/O2 film, followed by AA grafting then by nitrogen plasma and the lowest activity was on the native film. The observed antibacterial activity was correlated to the type of the surface, hydrophobic and hydrophilic interactions, nisin distribution on the surfaces, surface charge, surface topography and amount of nisin adsorbed on the surfaces.

Biography:

Alexander Zaichenko has completed his PhD at the age of 33 years from Moscow Institute of Fine Chemical Technology and postdoctoral studies from Lviv Polytechnic National University (NULP). He is the Dr. Sci., head of the team at the Department of Organic Chemistry and Professor at the Department of Applied Physics of NULP. He has published more than 80 papers in reputed journals as well as 7 chapters of the monographs. He is member of International Polymer Collidal Group.

Abstract:

Developed synthesis and properties of polymeric surfactants (PS) and self-assemblies (SA), micelles and nanoparticles (NPs), of desired size and functionality is discussed. Combined radical and non-radical methods of the synthesis of primary oligomer-precursors containing end or side reactive groups and their using for assemblage of PS of block and/or comb-like structures were studied. Proposed approaches are based on polymerization of functional monomers including unsaturated peroxides in the presence of functional chain transfer agents. That provides controlling oligomer-precursor chain length and entering reactive side and end groups. The oligomer-precursors were used for construction of PS via: - polymerization providing formation of comb-like or block-copolymers using oligomer-precursors with side or end peroxide groups as macroinitiators, respectively; - polymerization providing formation of block-copolymers using oligomer-precursors with end hydroxyls (PEGs, polyoxazolines, perfluorine alcohols) as RedOx macroinitiators with Ce4+ salt; - attachment of the blocks of distinct branching and functionality using oligomer-precursors with epoxide, amino, hydroxyl end groups as reagents. Novel oligomer-precursors and PS of variable architectures, controlled lengths of blocks and side branches were studied using GPC, spectroscopy, and colloidal-chemical techniques. PS form SA of different degree of self-organization, size and morphology in liquids of various polarities that are specific nanocontainers for solubilization of water-insoluble substances and nanoreactors for nucleation and functionalization of magnetic, luminescent and scintillation NPs. TEM, DLS, SAXS, RAMAN and luminescent spectroscopy were used for study of SA and NPs. The developed functional nanostructures were successfully tested as vehicles for drug and nucleic acid delivery and as physically detectable cell labels.

Biography:

NVSN Naidu has completed his PhD from Sri Venkateswara University and currently working as a Professor in the Department of Chemistry, Sri Venkateswara University, India. His research involves the development of novel and cost effective spectroscopic and electrocehmical methods for the detection of organic and inorganic molecules from different matrices. He has published more than 100 papers in reputed journals and has been serving as an editorial board member of repute.

Abstract:

An improved high performance dual enzyme based biosensor has been developed for the determination of aspartame in food samples. The nanobiocomposite involves ammonium piperidine dithiocarbamate (APDC) capped copper nanoparticles (CuNPs) loaded on multi walled carbon nanotubes (MWCNTs) and assimilated with β-cyclodextrin. Finally, the dual enzyme system was immobilized onto the electrode surface to construct CHT-LAAO/CuNPs-APDC-MWCNTs-β-CD/GCE. Characterization was performed using Transmition electron microscope (TEM), Thermogravimmetric analysis (TGA), X-ray diffraction (XRD) and Fourier transition infrared spectroscopy (FT-IR). The biosensor showed optimum response within 5 s at pH 7.5 and 35 oC, when polarized at 0.25 V vs. Ag/AgCl. Furthermore, CHT and LAAO were adsorbed tightly on the surface of the modified electrode and shows enzyme activity to convert aspartame to its oxidized product of keto ester and H2O2. There was a linear relationship between biosensor response (mA) and aspartame concentration in the range 0.001–2.0 mM. The sensitivity of the biosensor was 78.35 µA cm−2mM−1 with a detection limit of 0.005 mM (S/N = 3). The long term stability of the sensor in terms of 89.0 % of the original response on the third day was observed when conducted over a range of ten runs for five days using the same coating. The biosensor was evaluated and employed for the measurement of aspartame concentrations in different commercially available food samples.

Biography:

Prof. Mauro Santos has completed his PhD at the age of 29 years from São Paulo University – São Paulo – Brazil and postdoctoral studies from Federal University of São Carlos – São Paulo - Brazil. He is the Coordinator of the Laboratory of Electrochemistry and Nanostructured Materials of ABC Federal University – Brazil. He has published more than 86 papers in reputed journals and has been serving as an editorial member of Electrocatalysis. Editor of a Special Number of Journal of Nanomaterials (2012). Academic Excellence Prize of Federal University of ABC (2015) – Area – Chemistry. 1,300 citations in ISI and H Index 23.

Abstract:

This work describes the use of both carbon modified with nanostrucutres (nanoparticles, nanowires and nanospheres) containing metal and metals oxides and boron doped diamond electrodes in order to degradation of cyprofloxacine, fenol, dypirone, blue – evans dye. The main materials prepared are related to: carbon materials modified with fuctional groups by acidic and alkaline treatment and nanomarials modifying carbon support. The effects of increasing H2O2 electrogeneration are associated to the surface properties of the two materials which are completely different from those ones of pure carbon for further production of hydroxil radicals. For this reason, we have been developing changes of the carbon materials with acidic and alkaline treatment and using nanostructures of different oxides and metals with very small amounts on carbon and base materials for H2O2 electrogeneration. The main surface chemistry phenomena of this work is to discuss the modification of the carbon properties such as hidrophilicity, conductivity, structure and compostion of the surface species when we use both different carbon treatments and different proportions of nanostructures with several oxides and metals on carbon. In the case of the use of Boron-Doped Diamond Surfaces using Solar Photo-Electron-Fenton Processes as in the case of cyprofloxacione in synthetic urine. At the later case we are capable to promote the electrochemical incineration of the molecule yielding 96 % ciprofloxacin removal and 98 % mineralization after 360 min of electrolysis at optimum values of pH 3.0 and current density of 66.6 mA cm−2. The evolution of released inorganic ions was followed by ion chromatography.

Biography:

L.I. Velikanova has completed his PhD at the age of 34 years from NWSMU n.a. I.I. Mechnikov Saint-Petersburg, Russia and postdoctoral studies also NWSMU n.a. I.I. Mechnikov Saint-Petersburg, Russia. He is the director of research laboratory of chromatography of NWSMU n.a. I.I. Mechnikov Saint-Petersburg. He has published more than 30 papers in reputed journals and she is a researcher, who is interested in the use chromatography in endocrinology.

Abstract:

We developed the technique of the urinary steroid profiles (USP) generation by gas chromatography–mass spectrometry (GC-MS) and optimized sample preparation procedure and conditions of chromatographic analysis. The enzyme for hydrolysis (64 h, t 370С) was sulfatase from Helix pomatia. Steroids were extracted with chloroform. The efficacy of derivation was increased by enlargement of methoxyamine solution volume in pyridine to 160 μL and ТSIM to 500 μL for 5ml of urine. 5α-androstanediol was an internal standard for quantitative calculations. 66 steroids by a GC–MS— QP2010 ULTRA gas chromatograph–mass spectrometer (Shimadzu. Japan.) were determined. 4 types of USP for 32 patients with adrenocortical carcinoma (ACC) are revealed by GC-MS. The difference between them was androgen and glucocorticoid secretion. 15 main ACC features were observed by GC-MS. 100% sensitivity and specificity of ACC and adrenocortical adenoma (ACA) differential diagnosis were achieved by combination of following parameters: THS> 900 µg/24 h and/or DHEA> 1500 µg/24 h with ratios of 3α,16,20-pregnentriol/ 3β,16,20-pregnentriol (3α,16,20dP3 /3β,16,20dP3) less than 6.0 and 3α,17,20dP3 /3β,17,20dP3 less than 9.0 and the detection of «non-classical» 5-en-pregnens, not found in ACA and healthy persons. Features of 21-hydroxylase and 11β-hydroxylase deficiency were found in 32.2% and in 61.3% patients with ACC respectively. The decrease of activity of 21-hydroxylase in patients with ACA was found also. Probably, it is found one of the pathogenetic mechanism in the formation of adrenal cortex tumor and malignance.

Biography:

Mustafa Kucukislamoglu has completed his PhD at the age of 31 years from Karadeniz Technical Univ. He has been working at the Sakarya Univ., Chemistry Dep. as an academic staff since 1999. He has attanded more than 30 national and international conferences. He has published more than 40 papers in reputed journals and his publications have been cited more than 350.

Abstract:

The synthesis, reactions and biological properties of substituted coumarins constitute a significant part of modern heterocyclic chemistry. Compounds containing a coumarin moiety display a broad spectrum of biological activities such as antimicrobial, antifungal, anticoagulant, anti-HIV and insecticidal properties. Coumarins are an important class of CAIs for several reasons: (i) they were the first CAIs showing a high selectivity for inhibiting CA isoforms of interest for pharmacologic applications, such as the tumor-associated ones (hCA IX and XII, which are targets for antitumor/ anti-metastatic drugs) or the mitochondrial ones (CA VA and VB, which are targets for anti-obesity agents). 20 thiourea bearing coumaryl-3-carboxamid compounds were synthesized for the investigation of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) activities.

Biography:

John N. Phillopes has completed his PhD at the age of 33 years from Beni-Suef University, Egypt and postdoctoral studies from the same University. He has published many papers in different international journals.

Abstract:

Three new series of thiazoles, quinolones and thiazolidinones merged with benzimidazole, benzoxazole and benzothiazole nuclei were synthesized. All the prepared compounds were subjected to IR, 1H NMR, 13C NMR, mass spectral data and elemental analyses. Cytotoxic activity of the synthesized compounds were evaluated against two different types of cancer cells, breast (MCF-7) and colon cancer (HCT-116) cell lines. Seven compounds showed potent cytotoxic activity compared with doxorubicin, the reference drug with IC50 between 0.0125-0.0198 µM.

Biography:

Mustafa ARSLAN has completed his PhD at the age of 31 years from Cleveland State University. He has been working at the Sakarya University, Chemistry Department as an academic staff since 1998. He has attanded more than 35 national and international conferences. He has published more than 40 papers in reputed journals and his publications have been cited more than 400.

Abstract:

Heterocyclic moieties, such as indoles, thiazolidine-4-ones, pyrazoles, piperazines, pyridines, etc., always have considerable attention due to their pharmacological activities. Heterocycles bearing one or more nitrogen and sulfur atoms have received more attention recently. Among the most frequently encountered heterocyclic compounds, thiazole and its derivatives play an important role in nature. The heterocyclic compounds have broad applications including the treatment of hypertension, bacterial and HIV infections, allergies and as antibiotics and ligands for estrogen receptors.  Besides, these compounds have used as inhibitors against fructose 1, 6-bisphosphatase, tumor associated carbonic anhydrase isoforms hCA IX and hCA XII, sphingosine kinase and evaluation of in vitro anticancer activity. 12 sulfonamide bearing thiazole compounds were synthesized for the investigation of carbonic anhydrase enzyme activity.

Biography:

Phoebe F. Lamie has completed her PhD at the age of 32 years from Beni-Suef University, Egypt and postdoctoral studies from the same University. She has published about 9 papers in different international journals.

Abstract:

Sixteen new phthalimide derivatives were synthesized and evaluated for their in vitro anti-microbial, anti-oxidant and anti-inflammatory activities. The cytotoxicity for all synthesized compounds was also determined in cancer cell lines and in normal human cells. None of the target derivatives had any cytotoxic activity. (ZE)-2-[4-(1-Hydrazono-ethyl)phenyl]isoindoline-1,3-dione showed remarkable anti-microbial activity. Its activity against Bacillus subtilis was 133%, 106% and 88.8% when compared with the standard antibiotics ampicillin, cefotaxime and gentamicin, respectively. (ZE)-2-[4-(1-Hydrazonoethyl)phenyl]isoindoline-1,3-dione also showed its highest activities in Gram negative bacteria against Pseudomonas aeruginosa where the percentage activities were 75% and 57.6% when compared sequentially with the standard antibiotics cefotaxime and gentamicin. It was also found that the compounds 2-[4-(4-ethyl-3-methyl-5-thioxo-1,2,4-triazolidin-3-yl)phenyl]isoindoline-1,3-dione and 2-[4-(3-methyl-5-thioxo-4-phenyl-1,2,4-triazolidin-3-yl)phenyl]isoindoline-1,3-dione had anti-oxidant activity. 4-(N'-{1-[4-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-phenyl]-ethylidene}-hydrazino)-benzenesulfonamide showed the highest in vitro anti-inflammatory activity of the tested compounds (a decrease of 32%). To determine the mechanism of the anti-inflammatory activity of 4-(Nʹ-{1-[4-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-phenyl]-ethylidene}-hydrazino)-benzenesulfonamide, a docking study was carried out on the COX-2 enzyme. The results confirmed that the latter had a higher binding energy score (−17.89 kcal/mol) than that of the ligand celecoxib (−17.27 kcal/mol).

Biography:

Mustafa ZENGÄ°N has completed his PhD at the age of 41 years from Sakarya University. He has been working at same University, Chemistry Department as an academic staff since 1998. He has attanded more than 35 national and international conferences. He has published more than 20 papers in reputed journals and his publications have been cited more than 200.

Abstract:

Nitrogen-containing five-membered heterocyclic compounds are found in the structures of several natural products and pharmaceuticals. Most of them are used as synthetic intermediate products, reactants, ligands, or asymmetric synthesis catalysts1. Because their many synthesized derivatives are biologically active, thiazolidine has recently become an increasingly used heterocyclic system2,3. We synthesized TCA derivatives and investigated their antibacterial properties on multi-drug resistant (MDR) bacteria. The result showed that TCAs have significant antibacterial activity on Gram-positive (S. aureus) and Gram-negative bacteria (Pseudomanas, Acinetobacter, and Escherichia coli). TCA derivatives are structural analogue of proline. Therefore, it can inhibit bacterial growth by mimicking various essential functions of naturally occurring amino acids4. The molecules have been synthesized for antibacterial studies at a high yield using cheap and easily accessible starting materials.

Biography:

V.S. Rimkevich has completed his PhD at the age of 30 years from Moscow State University and received the rank of professor from Russian Academy of Natural History. He is head of the Laboratory of scientific technologies of mineral raw ores processing of Institute of Geology and Nature Management FEB RAS. He is an author of more than 60 papers in reputed journals and he has 14 patents.

Abstract:

Silicates and aluminosilicates, including kaolin concentrates, are inexhaustible source of alumina, silica, aluminum and silicon. Experiments were carried out on samples of kaolin concentrates produced at enrichment of raw quartz-feldspar-kaolin from the Chalgany deposit (Amur region). Leaching of kaolin concentrates was carried out in aqueous solutions of ammonium bifluoride and fluoride to produce ammonium hexafluorosilicate and hexafluoroaluminate. In the following steps, separated from the reaction mixture ammonium hexafluorosilicate and hexafluoroaluminate were dissolved and hydrolyzed in aqueous solutions under the influence of ammonium hydroxide to form nanometer-sized amorphous silica and aluminum hydroxide. Conditioned metallurgical alumina is extracted from aluminum hydroxide using calcination. The reaction of ammonia fluoride and ammonia water regeneration, those are entered on the stage closed technological processes after reduction was studied. Impurity compounds are separated on the different stages of hydrochemical processing. Thermodynamic parameters, rate constants and activation energy of hydrochemical reaction of processing of kaolin concentrates are determined. Low-waste material flow diagram is composed and the expenditure coefficients for every chemical compounds participating in technological processes are installed. These investigations are resulted in hydrochemical method of processing of kaolin concentrates with complex extraction of various useful components. The developed method could be applicated for complex processing of kyanite and nepheline concentrates and industrial wastes-ash from coal burning of thermal electro-centrals.

Biography:

Xuenian Chen has rewarded his PhD from Lanzhou Institute of Chemical Physics (LICP) of Chinese Academy of Sciences (CAS). He is the director of Henan Key Laboratory of Boron Chemistry and Advenced Energy Materials. His major field is boron chemistry, organometallic and coordination chemistry. He has published more than 80 papers in reputed journals and has been serving as an editorial board member of repute.

Abstract:

Boron/nitrogen materials are well known and have been applied in many fields because of their unique properties such as super hardness and good abrasivity. On the basis of the Isolobal Analogy, B-N is iso-electronic to C-C so B, N-alkane analogs should have a similar framework to alkanes and be generally occurred. However, a very few B, N-alkane analogs can be used to make B/N materials mainly due to their unavailability. The different electronegativity of boron from nitrogen leads B, N-alkane analogs to be polar molecules and hydrogen bonding to boron and nitrogen atoms are chemical active, which results in totally different properties of B, N-alkane analogs from that of alkanes. For example, ethane is a non-polar molecule and its melting point is -184ËšC, but its isolectronic B, N-alkane analogs, ammonia borane, NH₃BH₃, is a polar molecule with the M.P. 103ËšC. The polarity and activity of B, N-alkane analogs mentioned above make their preparation difficult. As a result, only a few B, N-alkane analogs such as NH₃ (BH₂NH₂) nBH₃, (n=0, 1, 2) were prepared, and in most case, these compounds were serendipitously prepared. We found such B, N-alkane analogs can be target synthesized using proper reactions. In this topic, we report the target synthesis of B, N-alkane analogs. We will also discuss the influence factors and mechanism of reactions and try to summarize the general synthetic methods for preparation of long chain B, N-alkane analogs.

Biography:

Hüseyin Özkan Toplan has completed his PhD in 1998 from Sakarya University. He has been working at the Sakarya University, Metallurgy & Materials Engineering, as an academic staff since 1990. He has attanded more than 35 national and international conferences. He has published more than 30 papers in reputed journals and his publications have been cited more than 150.

Abstract:

The MgO-Al2O3-SiO2-TiO2 glass system was prepared by melting method. The crystallization behaviour and crystallization kinetics of a sample with glass ceramic composition were examined. DTA and XRD analysis revealed the crystallization of Ca0.965Mg2Al16O27 cordierite (Mg2Al4Si5O18) and Fe2TiO5 phases. The activation energy for the crystallization of cordierite phase has been evaluated, and the crystallization mechanism has been studied by applying DTA measurements performed at various heating rates. The results indicate that the dominant crystallization mechanism for this system is bulk crystallization dominated by three-dimensional growth. The average calculated values of crystallization and viscous flow for the formation of crystal phases from the glass matrix were measured to be 330 kJmol-1 and 377 kJmol-1, respectively.

Biography:

Xiaoping Sun completed his PhD in 1995 from University of New Brunswick (Canada). He is Professor of Chemistry at University of Charleston. His resarch focuses on studying chemical synthesis and mechanisms. He has published a textbook with Wiley and 28 papers on both inorganic and organic chemistry in reputed journals.

Abstract:

The linear uranyl UO22+(VI) cation (D∞h symmetry) exhibited strong charge-transfer absorptions at 350-400 nm in the media containing reductive bromide (Br-), iodide (I-), methanol (CH3OH), ethanol (CH3CH2OH), phenol (PhOH), DMSO (CH3SOCH3), diphenyl sulfide (Ph2S), and diphenyl selenide (Ph2Se). The absorptions originate from a single-electron transfer from the reductant to the uranium(VI) valence shell. Their intensities (absorbances at 375 nm) have been found to be directly proportional to molar concentrations of the reductant and UO22+ in solution, respectively, showing the nature of a bimolecular interaction in the charge-transfer transition. Electron Paramagnetic Resonance (EPR) studies have shown that the charge-transfer (single-electron transfer) also took place slowly in the dark, resulting in thermal reduction of UO22+(VI) to UO2+(V) (g=2.08) by each of the reductants. The reductants were oxidized to stable radicals. For example, bromide in the aqueous medium was oxidized by UO22+ to a stable bromide-bromine anion-radical pair Br2-. (g=1.92). RCH2OH (R=H or CH3) was oxidized by UO22+ to the -hydroxylalkyl R.CHOH radical, which likely forms a cation-radical pair with U(V) (UO2+, R.CHOH) stabilizing the radical. In acetone, Ph2Se was oxidized by UO22+ to the Ph2Se. (g=2.00) radical likely forming a stable cation-radical pair with uranyl(V) (UO2+, Ph2Se.). In the presence of sulfuric acid, CH3SOCH3 (DMSO) was shown to undergo a charge-transfer oxidation by UO22+(VI) to a stable CH3SOCH2. (DMSO.) radical (g=2.01), and UO22+(VI) was reduced to UO2+(V). A thermal oxidation-reduction of UO22+(VI) and phenol in acetone was found by EPR to give UO2+(V) and a stable phenoxyl (PhO.) radical (g=2.00) via a charge-transfer pathway.

Biography:

Dr. Keisham Surjit Singh has completed his PhD at the age of 35 years from North Eastern Hill University, Shillong, India and then joined as lecturer in the Department of Chemistry, NERIST, Arunachal Pradesh, India. In 2010, He joined as Assistant Professor in National Institute of Technology, Agartala, India He has published more than 20 papers in reputed journals like New Journal of Chemistry, Inorganica Chimica Acta, Journal of Organometallic Chemistry etc. He acts as reviwer for Medicinal Chemistry Research, Complex Metals etc. and has been serving as an editorial board member of International Journal of Scientific and Engineering Research.

Abstract:

Triorganotin(IV) complexes of azo-carboxylic acids were synthesized by the reaction of 2/4-(2,4-dihydroxy-phenylazo)-benzoic acids with appropriate triorganotin(IV) chlorides [R= Me (1 and 3), Ph (2 and 4) and Bu (5)] in presence of triethylamine. The characterization of the complexes was accomplished by elemental analyses, UV, IR and multinuclear (1H, 13C and 119Sn) NMR spectroscopy. Structure of compound 3 was established by X-ray crystal structure analysis. X-ray crystal structure of 3 revealed that the compound exhibits a 48 membered macrocyclic-tetrameric structure with trigonal bipyramidal geometry around the tin atoms in which the three methyl groups occupy the equatorial positions while the apical positions are being occupied by the oxygen atom of carboxylate group of one ligand and the phenoxide oxygen atom of another ligand. All the complexes display a sharp singlet 119Sn resonance in the range specified for the four coordinate structures suggesting that complexes have tetrahedral structures in solution. The five coordinate structure of the complexes in solid state dissociated into monomeric species with four coordinate structures in solution. Anti-diabetic activities of the complexes were studied and the results showed that the synthesized compounds exhibited effective activity even higher than the standard compound acarbose.

Biography:

Jing He has completed his PhD from Beijing University of Chemical Technology in 1999. She is the director of State Key Laboratory of Chemical Resource Engineering, China. She has published more than 150 papers in reputed journals. She was awarded the title of ‘Outstanding Key Teacher’ by the Ministry of Education (China) in 2002, and selected to participate in the ‘New Century Outstanding Talent’ scheme in 2004. In 2010 she was supported by National Science Foundation for Distinguished Young Scholars.

Abstract:

Transition-metal catalyzed asymmetric reaction is an important strategy to produce optically pure compounds. Recently, utilization of steric effects of inorganic hosts to improve enantioselectivity has attracted much attention in heterogeneous asymmetric catalysis. Success examples have been reported for the promotion of chiral induction by the confinement in the rigid pores of microporous and mesoporous hosts or flexible interlayer region of layered solids. This work focuses on how to utilize the steric effect of rigid planar nanosheet of layered host to enhance the enantioselectivity in metal-catalyzed asymmetric synthesis. Alpha-amino acids, a kind of naturally occurring chiral units, have been intercalated into the interlayer galleries of LDHs by ion-exchange or co-precipitation. Nanosheet-attached L-glutamate, L-alanine, and L-serine were then employed as the ligands of vanadium (V), zinc (II) or Rh (III) centers for asymmetric catalysis. In virtue of the steric synergies of rigid inorganic layers, remarkable enhancement of chiral induction has been achieved in vanadium-catalyzed epoxidation and zinc-catalyzed aldol addition reactions. The ‘huge’ inorganic layers can make a stable ‘rigid’ environment around the chiral centre, and thus have significant impact on the enantiomeric selectivity by restricting or directing the access trajectory of reactant molecules. In Rh-catalyzed C-H activation, the nanosheets have been reveled to enhance the catalytic activity by affording the desired basicity and improve the regioselectivity by serving as the rigid substitution of alpha-amino acid ligands

Biography:

Zhiyong Wang completed his PhD in Chemistry from Northwestern University and did postdoctoral studies at Univeristy of Pittsburgh and then Texas A&M Univeristy. He has worked in a number of organic chemistry related areas inlcuding enzyme inhibitor design, drug discovery, protein functional studies, and applications of metal-organic frameworks. He is currently an Assistant Professor at the Department of Chemistry and Physics at Troy University. He has published more than 20 papers in reputable journals.

Abstract:

By combining the great catalytic activity of palladium nanoparticles and large surface area and tunable structure of metal-organic frameworks, we have developed a Pd@MIL-101 composite material as a heterogeneous catalyst for the tandem in situ generation of hydrogen from ammonia borane and reduction of various nitro compounds. The catalyst exhibits high activity, selectivity and recyclability. A variety of aliphatic and aromatic nitro compounds with different groups were able to be reduced to the respective primary amines with excellent conversion yields (> 99%) in very short reaction times (1.5–5 min). Six consecutive runs of the tandem catalysis result in no discernable loss of catalytic ability, demonstrating the great stability and recyclability of the Pd@MIL-101 catalyst. Compared to other reported reduction systems for nitro compounds, our catalyst does not require stored or pressurized hydrogen and it is therefore not only more efficient but also much safer. The application of Pd@MIL-101 in a number of other organic transformations will also be discussed.

Biography:

Sandro Luiz Barbosa dos Santos obtained his PhD from the Institute of Chemistry of São Paulo University at Ribeirão Preto, Brazil, and did postdoctoral studies in the Faculty of Pharmaceutical Sciences of that University. He is Associate Professor III in the Department of Pharmacy of the Federal University of the Jequitinhonha and Mucuri Valleys, teaching Organic and Advanced Organic Chemistry, and Chemistry of Solid Catalysts. His Group has 2 doctoral, 5 master and 5 undergraduate students. He has published more than 20 papers and has been a reviewer to several international jounals.

Abstract:

The silica gel is produced from a mixture of construction sand and sodium carbonate. The catalyst has been used in the transesterification of vegetable oils producing methanol or ethanol biodiesel fuels and crude glycerol; this crude polyalcohol and others, like ethylene glycol or substituted propane-1, 3-diols are successfully converted to the ketals of alkyl and alkyl-aryl ketones by SiO₂-SO₃H. These ketals, such as the fuel additive Solketal, can be further esterified with fatty acids in the presence of SiO₂-SO₃H in high yields, and those esters are easily hydrolyzed to monoacylglycerides by a mixture of MeOH/H₂O and SiO₂-SO₃H as catalyst; these monoglycerides are important for the food and the pharmaceutical industries. With the inexpensive SiO₂-SO₃H catalyst is possible therefore to convert waste cooking oils into biodiesels and important glycerol by products, mainly in solvent free reactions. Other important esterification and etherification of aromatic acids and aromatic alcohols have been achieved. SiO₂-SO₃H can safely be used as catalyst in reactions involving microwave irradiation, for instance, to speed up from 12 hours to five minutes the direct (aldol) condensation of ketones, or to obtain other α, β-unsaturated ketones from cross aldol condensations between aldehydes and ketones. The simple, low-cost silica gel SiO₂-SO₃H had been so far an excellent substitute of H₂SO₄ for all bronsted acid promoted reactions we tested. Its small surface area, combined with large pores, lipophilicity and a high degree of Lewis acidity, facilitates high conversion yields even in reactions which are limited by equilibrium factors under homogeneous conditions.

Biography:

Dr. Sanjeev P. Maradur has completed his Ph. D from Shivaji University Kolhapur, India in 2006 and worked as Research Scientist in Jubilant Life Sciences Ltd, Noida, India. He then moved to South Korea in 2009 for his postdoctoral studies to work with Prof. R. Ryoo at Center for Functional Nanomaterials, Korea Advanced Institute of Science and Technology (KAIST), and Prof. K. S. Yang at Alan MacDiarmid Energy Research Institute (AMERI), Chonnam National University, Gwangju Republic of Korea. He then moved to University of Oklahoma at Norman to work with Prof. Kenneth M. Nicholas on catalytic conversion of biomass derived polyols to olefins. He is presently Asst. Professor at Poornaprajna Institute of Scientific Research, Bangalore, India. He has published more than 15 papers in reputed journals and two patents to his credit. He has guided 2 M.Tech students and 3 graduate students are presently working in his group. He is a recipient Young Scientist Research Award from Government of Karnataka, India. He is the Co-Investigator for industry project sponsored by GTC Technology Inc, USA and Hindustan Petroleum Corporation Ltd, India.

Abstract:

Acetalization of glycerol with acetone is very significant reaction for synthesis of solketal (2, 2-dimethyl-4- hydroxymethyl-1, 3-dioxolane). Solketal can be used as an additive in formulation of diesel, biodiesel and gasoline fuels. It decreases the viscosity, improves cold properties and provides the required flash point to the biodiesel. These oxygenated products when blended with the diesel fuel curtail the uncontrolled emission of carbon monoxide, particles, hydrocarbons and aldehydes. Challenge in the synthesis of glycerol derivatives is the formation of by-product water which hinders the catalytic activity in case of silica due to low hydrothermal stability and commercial resins being too hydrophilic. Moreover, the commercial resins are not characterized by well-defined pores. Diffusion limitation and polymer swelling remain as disadvantage despite the development of large-pore resins, low-swelling polymers. In this work, sulfonic acid functionalized mesoporous polymer catalyst (MP-SO3H) was prepared by post synthetic modification of mesoporous polydivinylbenene by incorporating sulfonic acid moiety using conc. H2SO4. The synthesized materials were characterized by using several physicochemical techniques and their performance was evaluated for room temperature liquid phase acetalization of glycerol with acetone. MP-SO3H catalyst performed better than other conventional solid acid catalysts with 94 % glycerol conversion and 98.5 % selectivity for solketal. The high activity of MP-SO3H catalyst can be attributed due to facile diffusion of reactants and products in the mesoporous environment together with an optimized balance of acid functionalization. Glycerol conversion increased with increase in the total acidity of the catalyst. Amount of acidity and surface density of (H+) ions were found to have a direct correlation with catalyst performance.

Biography:

Dr. Ganapati Shanbhag has completed his PhD from National Chemical Laboratory, Pune, India in 2008 and 2-year postdoctoral studies from Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea. He is presently Asst. Professor at Poornaprajna Institute of Scientific Research, Bangalore, India. He has published more than 35 papers in reputed journals and has been serving as an editorial board member of Journal of Catalyst and Catalysis. He has guided 3 PhDs and 3 MTech theses. He is the Principal Investigator for industry projects sponsored by GTC Technology Inc, USA and Hindustan Petroleum Corporation Ltd, India.

Abstract:

Increasing demand for petroleum fuels and depleting availability of crude oil has made to look for alternative sources of energy. Biodiesel is one such source which attracted many researchers since it can be synthesized by transesterification of vegetable oil in presence of an acid or a base catalyst. To overcome the issues related to homogeneous catalysts like NaOH, heterogeneous acid-base catalysts were developed to make an eco-friendly process of biodiesel synthesis. Further, to improve the economics of the process, the byproduct glycerol can be converted into value-added chemicals like acetins and glycerol carbonate via transesterification and carbonylation reactions respectively. In this work, a novel metal hydroxystannate was reported as a strong base catalyst for organic transformations. It has a perovskite type crystal structure with metal atoms octahedrally coordinated with corner sharing hydroxyl groups to form Sn(OH)6 and M(OH)6 octahedra (where M is Ca, Zn, Mg or Sr). It is found that calcium hydroxystannate acts as a strong solid base catalyst with very high activity for biodiesel synthesis from vegetable oils and synthesis of acetins from glycerol. On the other hand, zinc hydroxystannate acts as bifunctional acid-base catalyst with hydroxy groups contributing as basic sites and zinc as Lewis acid center. This catalyst was successfully applied for glycerol carbonylation with urea to make glycerol carbonate. Further, calcination of metal hydroxystanntes at high temperatures resulted in metal composite oxides which also found to exhibit good acidity and basicity which are successfully applied for glycerol transformation reactions.

Biography:

PhD and professor in inorganic materials research and chemical engineering. Over 25 years of professional experience in material research and inorganic chemistry. Candidate of science degree (corresponding to Ph.D.) from the Institute of Technology (St-Peterburg) and the full doctor and professor degree at the age of 35 years from the Perm State Technical University. He has more than 30 patents of Russia and more than hundred other written works.

Abstract:

Porous glasses with closed cell structure and densities lower than 250–300 kg m–3 are rather attractive as functional heat-insulating materials. It was found the possibility of obtaining low-density cellular silicate materials by the hydrate mechanism due to the stronger gas evolution in the course of the redox reaction between water vapor and carbon. The research results were obtained by synchronous thermogravimetric and MS analysis, SEM, X-ray phase analysis. It was found that raising the number of Na+ ions in the raw silicate formulation leads to an increase in the amount of bound water removed at thermal plasticity temperatures of sodium-calcium glasses (973–1073 K). The redox reactions between steam and carbon in synthesis of a cellular silicate material favor an increase in the gas evolution and a decrease in the density of the material obtained. Synthesis of glass from hydrated polysilicates in the intergrain space of dispersed glass can be used to obtain foamed-glass materials and secondary use of a low-grade sodium-calcium glass. The presented method of obtaining cellular material can use any glass wastes as a raw without extra cooking and to obtain the material similar to the commercial foamed glass of blocked and granulated types. The use of non-powder preforms enables applying efficient technological methods in production and obtaining products with new properties such as large-size items, coloured ones or those acceptable for facing and also light-weight construction mixes. The applications of obtained materials are presented and discussed.

Biography:

Luz Angela Carreño Díaz is a Chemist, Esp., M.Sc.who has completed his PhD from University of Houston, TX and postdoctoral studies from University of Houston School of Chemistry. She is the director of the Sustainable Chemistry Research Lab at Universidad Industrial de Santander, Colombia, South America. She has directed more than 20 undergraduated and posgraduated (masters and doctoral degrees) thesis with more than 12 papers published in reputed journals.

Abstract:

Environmental consequences of high consumption of fossil fuels containing significant amounts of sulfur compounds have promoted the study and research of new alternatives to remove these components in order to improve the quality of fuels in Colombia and generate least environmental impact. Nowadays, the most widely used process for removing sulfur compounds during refining is known as hydrodesulphurization, this process although has shown good results in the reduction of aliphatic organosulfur has drawbacks for removal of aromatic sulfur compounds. With the aim of proposing a treatment to be applied after the hydro treating, in this research desulphurization with an immobilized ionic liquid on active carbon has been tested on model mixes and enriched real commercial gasoline. The model mixes containing thiophene and benzothiophene at concentration of 500 ppm of sulfur were passed through a fix bed reactor containing the composite. The sulfur selective ionic liquid 1-Butyl-3-methylimidazolium tetra fluoroborate was immobilized on a solid matrix of activated carbon. Characterization of the material has been performed by FTIR, Raman, TGA, BET, and SEM. Desulfurization has shown that by using the composite is possible to reduce the sulfur concentration from 500 to 98 ppm using 0,300 g of solid per 5 ml of model gasoline. By using a solid material containing a selective ionic liquid immobilized on carbon active it is possible removal percentages of up to 80% of aromatic sulfur compounds with additional advantages of recyclability, reuse, less time consuming, and significantly less amount of IL.

Biography:

Prof JC Ngila has a BEd(Sci) and MSc(Chemistry) from Kenyatta University (KU), Kenya (1986 and 1992); PhD UNSW Australia (1996). She worked as a tutorial fellow /Lecturer at KU (1989-1997); University of Botswana as a Lecturer/ Senior Lecturer (1998-2006); University of KwaZulu Natal as Senior Lecturer (2006-2011); University of Johannesburg (UJ) as Professor of Chemistry in April 2011. She has taught various courses in Analytical/Environmental chemistry and research in water quality monitoring and treatment using nanocomposite membranes; modelling mass balance in wastewater treatment plants. She has published more than 100 journal articles and graduated more than 50 postgraduate students.

Abstract:

We report dechlorination of mixed pesticides (dieldrin, chlorpyrifos, diuron and fipronil) using Fe-Pd nanoparticles anchored on acrylic acid (AA) grafted mesoporous silica (MS) membrane as inert support designated as (Fe-Pd/MS-g-PAA). Nanocomposites made up of inorganic nanoparticles give enhanced performance due to their high surface area to volume ratio. When Fe-Pd is loaded on MS-g-PAA substrate, the costly post-treatment and filtration processes associated with powdered materials are eliminated. Chlorinated pesticides are manufactured in large quantities primarily for eradication of pests in agriculture. However, they finally end up in our soils, food and water sources. These pesticides are cholinesterase inhibitors and their adverse health effects manifest in the nervous, immune and endocrine systems. Therefore, their removal from contaminated water is necessary. Bimetallic iron-palladium nanoparticles immobilized on MS-g-PAA were used for their dechlorination to benign products. The loading of Fe-Pd was done by adding 1 g MS-g-PAA to a ferrous sulfate solution followed by reduction with NaBH4. The precipitate was then added to palladium acetate solution, reduced, filtered, washed and dried. The composite was characterized using FTIR, XRD, SEM, BET and TEM and chemical analysis was done using GCxGC-TOFMS. The results obtained show that 95 to 99 % of dieldrin, chlorpyrifos and diuron were dechlorinated in 60, 120 and 180 minutes respectively, while for fipronil, it took 180 minutes to reach 90%. The data was processed to obtain kinetic parameters. However, mineralization rate (mr) was low at 36 %, 45 %, 43 % and 45% for chlorpyrifos and dieldin, fipronil and diuron, respectively.

Biography:

Dr. Charanjeet Kaur Mangat has completed her PhD at the age of 30 years from Guru Nanak Dev University. She is the HOD of School of Applied & Basic Sciences, RIMT University. She has published 7 papers in reputed journals.

Abstract:

Reactive dyes are hazardous due to their property of forming covalent bond with –NH2 and –SH group of proteins in living organisms. Hence their removal is mandatory from the effluent before discharging into main stream. Different methods have been employed for the satisfactory removal of dyes. Current methods for their removal largely rely on adsorption techniques which are costly and produce another waste to be disposed off, whereas the concept of reverse micelles acting to encapsulate the dye in aqueous micro pool in solvent environment provides a useful chemistry. The removal of the reactive red RB from aqueous phase in amyl alcohol solvent using cationic surfactant 1,1'-(1,1'-(ethane-1,2-diylbis-(sulfanediyl))bis(octadecane-2,1-diyl))dipyridinium bromide (CMC = 0.02 mM and Molecular weight = 915.15) was successful giving 100% removal. The effect of dye and surfactant concentration, solvent, temperature, salts like NaCl, KCl, NH4Cl and MgCl2 were studied. The percentage removal of dye depends upon the size of the reverse micelle of the surfactant. The solvent used for the dye removal can be recovered by distillation method and can be reused.