zinc oxide nano-particles with the average diameter of about 25 nm were modified with different mole ratios of trimetoxyvinyl silane (tmvs) and oleic acid, as coupling agents, in order to modify their surface properties and render them more hydrophobic. then, dispersibility of the surface modified nano-particles was examined in some monomers with different levels of hydrophobicity, including me...

A novel nano-initiator containing kojic acid moiety, [5-(benzyloxy)-4-oxo-4H-pyran-2-yl)methyl-2-bromo-2-methylpropanoate was synthesized by the reaction of 5-(benzyloxy)-2-(hydroxymethyl)-4H-pyran-4-one with 2-bromoisobutyryl bromide in triethylamine and used as initiator in the atom transfer radical polymerization (ATRP) of styrene and methyl methacrylate in the presence of Cu(0)/CuCl2and N,N...

The radical copolymerization of (p-chlorophenoxycarbonyl)cyclopropyl styrene with and methyl methacrylate has been carried out. New cyclopropane-containing copolymers have obtained. It established that the synthesized due to peculiarities their structure polyfucntionality, namely content carbonyl cyclopropane groups sensitive UV irradiation in macromolecule photosensitivity. constant values rel...

Cyclopentalljphenanthrene titanium trichloride and its 2-methyl and phenyl derivatives were synthesized; the crystal structure of the 2-mcthyl-substituted complex was determined by X-ray diffraction analysis. In the presence of methylalumoxane (MAO), these complexes give highly active catalysts for the syndiotactic polymerization of styrene; the 2-phenyl-substituted complex exceeds all previous...

Background: Lipase is an enzyme with immense application potential. Ester synthesis by lipase catalysis in organic media is an area of key industrial relevance. Enzymatic preparations with traits that cater to the needs of this function are hence being intensely researched. Objective: The objectives of the study were to immobilize the lipase from Bacillus sp. PS35 by cross-linking and adsorpti...

Benzo[c]phenanthridine skeleton was synthesized from easily available starting N-methyl-o-toluamide 2 and o-methylbenzonitrile 5 in 7 steps. Radical cyclization of styrene 10 afforded 6,11-dimethyl-6,11-dihydro-5H-indeno[1,2-c]isoquinolin-5-one 13. Most 3-arylisoquinolines have displayed strong activities against human tumor cell lines. Especially, indenoisoquinolinone 13 exhibited excellent cy...

Zeolite encapsulated Co(II), Cu(II) and Zn(II) complexes with 2-methyl benzimidazole (Mebzlh) have been used to catalyze the reaction of styrene oxide with acetone under reflux condition. The yield of the isolated product using various catalysts range from good to excellent and the efficiency of the recycled catalyst was excellent.

The copolymers of glycidyl methacrylate/a-methyl styrene were synthesized. The quantitative C{H}-NMR spectroscopy was used to determine the copolymer compositions. The distortionless enhancement by polarization transfer, C-H heteronuclear single quantum coherence and total correlation spectroscopy were used for the complete spectral assignment of C{H}and H-NMR spectra.