Reversible Photoinduced Electron Transfer in a Ruthenium Poly(2-methoxyaniline-5-sulfonic acid) Composite Film

被引：27

作者：

Dennany, Lynn ^{[1
,2
,3
]}

Innis, Peter C. ^{[1
,2
]}

Wallace, Gordon G. ^{[1
,2
]}

Forster, Robert J. ^{[3
]}

机构：

[1] Univ Wollongong, Intelligent Polymer Res Inst, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, ARC, Ctr Excellence Electromat Sci, Wollongong, NSW 2522, Australia

[3] Dublin City Univ, Sch Chem Sci, Natl Ctr Sensor Res, Biomed Diagnost Inst, Dublin 9, Ireland

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 41期

基金：

澳大利亚研究理事会; 爱尔兰科学基金会;

关键词：

D O I：

10.1021/jp804213r

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In situ electron spin resonance (ESR) studies have been performed on composite films consisting of a ruthenium tris(bipyridyl) complex and an inherently conducting polymer, poly(2-methoxyaniline-5-sulfonic acid) (PMAS). The composites were investigated under white light irradiation and potential control conditions to probe photoinduced electron transfer between the ruthenium metal center and the conducting polymer. PMAS exhibited a clear ESR signal, characteristic of the presence of mobile single spin polarons within the polymer structure. Irradiation of the PMAS in the presence of the ruthenium metal center resulted in the photo-oxidation of the Ru2+ to the Ru3+ state, as a result of which the PMAS ESR signal was replaced by a response typical of the Ru3+ salt. Upon removal of the illumination, reversible photo switching occurred. This reversibility makes these novel composites promising for applications in areas such as chemical sensors, light switching, and light harvesting devices.

引用

页码：12907 / 12912

页数：6

共 33 条

[21] CONDUCTING POLYPYRROLE FILMS CONTAINING [RU(2,2'-BIPYRIDINE)2(3-(PYRROL-1-YLMETHYL)PYRIDINE)CL]+ - ELECTROCHEMISTRY, SPECTROELECTROCHEMISTRY, ELECTRONIC CONDUCTIVITY, AND IONIC-CONDUCTIVITY [J].