The current interest of our research group is largely focused on the development and understanding of precipitated crystalline organometallic compounds. We are placing a strong emphasis in the study of the synthetic procedures, the morphology, and on the structural determination of such compounds. Special importance is engaged in the preparation coordination polymers crystallized from solutions of supercritical CO2, (scCO2), where the use of a co-solvent is occasionally employed depending on reagents solubility [1-3]. The correct selection of experimental conditions in the scCO2 reactive crystallization technique, allows a precipitation known from other methodologies, as well as new crystalline phases. This procedure leads to the crystallization of stable hierarchical nanoestructures involving micro and mesoporosity. As the preparation of the crystalline materials is carried out in scCO2, these obtained with microporous structures were recovered activated, i.e., with open volume, since the removal of any guest molecules from the framework is carried out by simple depressurization. This method is expected to have many potential applications in the development of green crystallization techniques for coordination polymers synthesis.
This paper explain the importance Chemistry of Lanthanides and Actinides, Metal ions in biology, Molecular mechanism of ion transport across membrane, Ionophores, Photosynthesis, Photo system I and Photo system II, nitrogen fixation, oxygen uptake proteins, cytochromes, and ferrodoxins
Polymer synthesis and characterization a laboratory manual
Complex analysis covers the basic mathematical operations (arithmetics, powers, roots) with complex numbers in Cartesian and polar forms; determine continuity/ differentiability/ analyticity of a function and find the derivative of a function; work with functions (polynomials, reciprocals, exponential, trigonometric, hyperbolic, etc) of single complex variable and describe mappings in the complex plane; work with multi-valued functions (logarithmic, complex power) and determine branches of these functions;•evaluate a contour integral using parameterization, fundamental theorem of calculus and Cauchy’s integral formula; find the Taylor series of a function and determine its circle or annulus of convergence
Laboratory Experiments for Non-Major and ..
Dr. Amita is a PhD in Pesticide Toxicology. Her present research focuses on a holistic approach to corrosion mitigation, development of self-healing polyelectrolyte/sol-gel based “Smart anti-corrosion coatings” for aerospace applications and corrosion sensor. Her group also focuses on the understanding of corrosion mechanism in the aluminum alloy AA2024, using first-principles calculations to re-tailor corrosion resistant coatings/ synthesize corrosion inhibitors. She has 5 US patents, 3 book chapters and 28 publications in peer reviewed journals. In addition to conference papers and invited talks. She has guided PhD & Master’s students. She is a member of several scientific societies, PhD thesis examiner and reviewer of corrosion journals.
Program | 6th World Congress and Expo on …
TiO2/epoxy coatings were successfully applied on the surface of AISI 316L stainless steel to change the wetting properties with the aim to improve corrosion resistance and biocompatibility of superhydrophobic/superhydrophilic surfaces. Contact angle measurements were used to evaluate wetting properties of non-coated, epoxy coated, as-received TiO2/epoxy coated and fluoroalkylsilane (FAS)-TiO2/epoxy coated substrates. As-received TiO2/epoxy coating and FAS-TiO2/epoxy coating showed superhydrophilic and superhydrophobic characteristics, respectively. The average surface roughness (Sa) of superhydrophobic surface was higher compared to the superhydrophilic surface due to the formation of agglomerates. Electrochemical impedance spectroscopy established enhanced corrosion resistance of surface-modified stainless steel, especially in the case of superhydrophobic FAS-TiO2/epoxy coating. The biocompatibility evaluated by cell attachment showed that AISI 316L stainless steel with hydrophilic nature and low Sa is the most favourable surface for bone osteosarcoma cells (MG-63) growth. Among all the tested coatings, the superhydrophilic coating was the most promising candidate in terms of biocompatibility.
Biological degradation of plastics: A comprehensive …
Electrochemical sensors for glucose can be divided into enzymatic and non-enzymatic. Enzymatic sensors are more specific in glucose determination. On the other hand non-enzymatic sensors are more chemically and thermally stable. Devices based on the synergistic effect of carbon nanostructures, conductive polymers and noble metal nanoparticles can be successfully used as enzymatic (using GOx) and non-enzymatic (without GOx) sensors for glucose detection. In this work, composite material containing GQDs, PPyNPs and AuNPs was synthesized and applied in both types of electrochemical sensors. Constructed systems were electrochemically characterized by voltammetric methods and their sensitivity towards glucose was examined.