Graft polymerizations of vinyl acetate onto granular corn starch were initiated by cobalt-60 irradiation of starch-monomer-water mixtures. and ungrafted poly(vinyl acetate) was separated from the graft copolymer by benzene extraction. Conversions of monomer to polymer were quantitative at a radiation dose of 1.0 IvIrad. However, over half of the polymer was present as ungrafted poly(vinyl aceta...

Multiple studies have explored using cage silsesquioxanes (SQs) as backbone elements in hybrid polymers motivated by their well-defined structures and physical mechanical properties. As part of this general exploration, we report unexpected photophysical properties copolymers derived from divinyl double decker (DD) SQs, [vinyl(Me)Si(O0.5)2][PhSiO1.5]8[(O0.5)2Si(Me)vinyl] (vinylDDvinyl). These e...

we have recently synthesized [ni (map) ] complex [h-map= 2- (methylamino) pyridine]. 2- (methy1amino)pyridine reacts with meli in thf and generates the lithium salt (li-map). further reaction of nicl with two equivalent of this ligand in thf leads to the formation of a dark red solution. analytical data, molecular weight, and magnetic susceptibility of this complex confirm the formula [ni (map)...

Hydrophobie Vinyl Compound, Enhancement Effect, Enzymatic Hydrolysis, Waste Paper Enzymatic hydrolysis o f waste papers in the presence of various vinyl compounds was carried out, and the addition o f the compounds such as methyl methacrylate, styrene, and vinyl acetate increased glucose yield resulting from the acceleration of the rate of the enzymatic hydrolysis. The optimum conditions existe...

A series of dimetallic and monometallic Cp*Ir(III) complexes bearing naphthalene-diimide-decorated N-heterocyclic carbene/pyridine [NDI-(NHC-pyridine)] ligands were prepared characterized. The show a C,C-chelating coordination the NHC-pyridine ligand, with pyridine ring ligand bound to metal via cyclometallation rather than by its nitrogen atom, although atom could be achieved subjecting one re...

1. Inhibition by pyridine of reduction of NAD by ethanol in the presence of yeast alcohol dehydrogenase was studied at 25 degrees in 60mm-glycine buffer (K(+), pH9.3). 2. The apparent Michaelis constant for ethanol increases linearly and that for NAD increases non-linearly with pyridine concentration. 3. Rates, v, observed in the presence of pyridine are lower than the values calculated from th...

In this study, the emulsion homopolymerization system containing vinyl acetate, potassium persulfate, a new cationic polymeric surfactant and water was studied by the applying semi-continuous emulsion polymerization process. The effects of new polymeric emulsifier on the physicochemical properties of obtained vinyl acetate latexes were investigated depending on vinyl acetate percentage in the p...

The palladium-catalyzed conversion of aryl and vinyl triflates to aryl and vinyl halides (bromides and chlorides) has been developed using dialkylbiaryl phosphine ligands. A variety of aryl, heteroaryl, and vinyl halides can be prepared via this method in good to excellent yields.

Overview to Pyridine Nucleotides Review Series [Circ Res. 2012;111:604–610.] Regulation of Cell Survival and Death by Pyridine Nucleotides [Circ Res. 2012;111:611–627.] Pyridine Nucleotide Regulation of Cardiac Intermediary Metabolism [Circ Res. 2012;111:628–641.] Sirtuins and Pyridine Nucleotides [Circ Res. 2012;111:642–656.] Sirtuins and Pyridine Nucleotides [Circ Res. 2012;111:642-656.] Regu...