In this work, a simple method for alcohol synthesis with high enantiomeric purity was proposed. For this, colloidal gold and silver surface modifications with 3-mercaptopropanoic acid and cysteamine were used to generate carboxyl and amine functionalized gold and silver nanoparticles of 15 and 45 nm, respectively. Alcohol dehydrogenase from Thermoanaerobium brockii (TbADH) and its cofactor (NAD...

In this work, we investigated the cytotoxicity, colloidal stability and optical property of gold nanorods before and after functionalizing them with thiolated PEG and Pluronic triblock copolymer (PEO-PPO-PEO) molecules. The morphology of functionalized gold nanorods was characterized by UV-visible absorption spectroscopy, transmission electron microscopy, and dynamic light scattering. Solution ...

We report studies on diffusion controlled deligation and ligation dynamics of a probe ligand 4-(dicyanomethylene)-2-methyl-6-(p-dimethylamino-styryl) 4H-pyran (DCM) with cationic cetyltrimethylammonium bromide (CTAB) micelles. In order to investigate the effect of spatial heterogeneity on the dynamics we study the DCM labeled micelle upon complexation with an enzyme alpha-chymotrypsin (CHT). Th...

A green, simple and sensitive spectrophotometric method was proposed for the determination of isoxsuprine hydrochloride (ISX), based on preconcentration with cetyltrimethylammonium bromide (CTAB) modified magnetic iron oxide nanoparticales (MNPs). ISX coupled diazotized metoclopramide drug via diazotization-coupling reaction in alkaline medium to form yellow-orange color product which extracted...

Polymeric micelles supply an environment, which can be cautiously regulated for drug delivery. The self-assembly of polymeric micellization is dynamic. Micellization thermodynamic describes how the system defines formation micelles. present study enables behavior surfactants in presence polymer to examined by conductometric and tensiometric methods. effects concentration temperature on thermody...

Most investigators studying rhodopsin in solution have used digitonin as the solubilizing agent. In solutions of this detergent, one can observe the bleaching of rhodopsin, as well as the reversal of bleaching by resynthesis from 11 cis retinal and opsin (e.g. see ref. 1) or by photoreversal from the intermediates of bleaching (e.g., see ref. 2). Other detergents can also solubilize rhodopsin (...