In-situ fabrication of polyacrylate-silver nanocomposite through photoinduced tandem reactions involving eosin dye

被引：62

作者：

Balan, Lavinia ^{[1
]}

Malval, Jean-Pierre ^{[1
]}

Schneider, Raphael ^{[2
]}

Le Nouen, Didier ^{[3
]}

Lougnot, Daniel-Joseph ^{[3
]}

机构：

[1] Univ Haute Alsace, CNRS, Dept Photochim Gen, ENSCMu,UMR 7525, F-68093 Mulhouse, France

[2] Nancy Univ, Dept Chim Phys React, CNRS, F-54001 Nancy, France

[3] Univ Haute Alsace, CNRS, Lab Chim Organ & Bioorgan, ENSCMu,UMR 7015, F-68093 Mulhouse, France

来源：

POLYMER | 2010年 / 51卷 / 06期

关键词：

Nanocomposite; Silver nanoparticles; Eosin; NANOPARTICLE-EMBEDDED POLYMER; ELECTRON-TRANSFER; VISIBLE-LIGHT; SOFT ACIDS; PHOTOPHYSICAL PROPERTIES; CATIONIC-POLYMERIZATION; EPOXY NANOCOMPOSITES; COAXIAL NANOCABLES; GOLD NANOPARTICLES; ALCOHOL REDUCTION;

D O I：

10.1016/j.polymer.2009.05.003

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A silver-acrylate nanocomposite was prepared using a novel one-pot strategy involving eosin dye as visible sensitizer and an amine derivative as radicals' source. The mechanism highlighted by steady state photolysis and time-resolved absorption spectroscopy lies on the initial formation of a strong ion-pair complex between eosin and Ag(+). Upon visible irradiation, the excited triplet state of the metal complex efficiently abstracts a hydrogen atom from the amine and produces an alpha-aminoalkyl radical In acrylate monomer matrix. such a strong reactive species initiates a free radical photopolymerization and also provides the reduction of the silver cation Through this 'in-situ' fabrication method, the kinetics formation of the nanocomposite and its detailed structural analysis are characterized by UV-visible, real-time FTIR absorption spectroscopy and by transmission electron microscopy. (C) 2009 Elsevier Ltd All rights reserved

引用

页码：1363 / 1369

页数：7

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