نتایج جستجو برای: vinylpyridine

تعداد نتایج: 563  

Journal: :Dalton transactions 2010
Florian Pevny Rainer F Winter Biprajit Sarkar Stanislav Zális

Vinylbenzoate-bridged diruthenium complexes (RHC=CH)(CO)(P(i)Pr(3))(2)Ru(mu-4-OOCC(6)H(4)-CH=CH)RuCl(CO)(P(i)Pr(3))(2) (R = Ph, 3a or CF(3), 3b) and vinylpyridine-bridged (eta(6)-p-cymene)Cl(2)Ru(mu-NC(5)H(4)-4-CH=CH)RuCl(CO)(P(i)Pr(3))(2) (3c) have been prepared from their monoruthenium precursors and investigated with respect to the sequence of the individual redox steps and electron delocali...

2011
J. P. Maksimović D. Lončarević N. Pejić D. Vasiljević-Radović S. Anić

The Bray-Liebhafsky (BL) oscillatory reaction generated in the batch reactor at 6268 C was perturbed by cobalt(II)-nitrate, supported on the macroreticular copolymer of poly-4-vinylpyridine with divinylbenzene (Co-PVPDVB). The kinetic data was analyzed of the complex pathways of the hydrogen peroxide decomposition in the examined BL reaction. The obtained results confirm that the kinetics of th...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
U Gasser B Sierra-Martin A Fernandez-Nieves

We present a neutron-scattering investigation of the crystal structure formed by pH -sensitive poly(2-vinylpyridine) microgel particles with 5 wt % of cross-linker. We focus on highly swollen particles and explore concentrations ranging from below close packing to well above close packing, where the particles are forced to shrink and/or interpenetrate. The crystal structure is found to be rando...

Journal: :Chemical communications 2014
Iryna I Perepichka Mohamed A Mezour Dmitrii F Perepichka R Bruce Lennox

Producing solution-based metal nanoparticles that do not agglomerate at elevated temperatures remains challenging. We show that thermally stable Au and Cu nanoparticles can be prepared using polystyrene-poly(4-vinylpyridine) diblock copolymers as capping agents. These materials remain stable when their solutions are subjected to prolonged heating up to 160 °C for more than 48 h. These condition...

Journal: :Environmental Health Perspectives 1983
R Davies

The cytotoxicity of a high purity Cornish kaolinite toward mouse peritoneal macrophages in vitro was examined. The material was cytotoxic towards these cells, the activity could be decreased substantially by pretreating the dust with poly(2-vinylpyridine N-oxide). Pretreatment of the dusts with poly(acrylic acid) had a small effect on cytotoxicity, but combinations of the polymer treatments vir...

Journal: :The Journal of the Society of Chemical Industry, Japan 1965

Journal: :Soft matter 2016
Yi-Syuan Lu Chia-Yu Yu Yung-Chih Lin Shiao-Wei Kuo

In this study, the influence of the functional groups by the diblock copolymers of poly(styrene-b-4-vinylpyridine) (PS-b-P4VP), poly(styrene-b-2-vinylpyridine) (PS-b-P2VP), and poly(styrene-b-methyl methacrylate) (PS-b-PMMA) on their blends with octa-functionalized phenol polyhedral oligomeric silsesquioxane (OP-POSS) nanoparticles (NPs) was investigated. The relative hydrogen bonding strengths...

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