Photoinduced electron transfer between Ru(bpy)32+ and donor/acceptor in a polyethylene oxide film

被引：4

作者：

Abe, T ^{[1
]}

Ohshima, T ^{[1
]}

Nagai, K ^{[1
]}

Ishikawa, S ^{[1
]}

Kaneko, M ^{[1
]}

机构：

[1] Ibaraki Univ, Fac Sci, Mito, Ibaraki 3108512, Japan

来源：

REACTIVE & FUNCTIONAL POLYMERS | 1998年 / 37卷 / 1-3期

关键词：

electron transfer; Ru(bpy)(3)(2+); methylviologen; phenothiazine derivative; photoinduced electron transfer; electron transfer distance; diffusion coefficient; polyethylene oxide;

D O I：

10.1016/S1381-5148(97)00143-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Electron transfer in a poly(ethylene oxide) (PEO) film has been investigated by the quenching of photoexcited Ru(bpy)(3)(2+) by 10-methylphenothiazine (MPTZ) and/or methylviologen (MV2+) dispersed in the film. Photoinduced electron transfer occurs by both the dynamic and static mechanisms. The electron transfer rate constants and characteristic electron transfer distances were 4.6 x 10(6) M-1 s(-1)/1.2 nm from MPTZ to Ru(bpy)(3)(2+)* and 1.3 x 10(7) M-1 s(-1)/1.7 nm from Ru(bpy)(3)(2+)* to MV2+ in each system. The diffusion coefficient of the molecules was estimated from the electron transfer rate constant and the electron transfer distance to be the order of 10(-8)-10(-9) cm(2) s(-1). (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：133 / 137

页数：5

共 23 条

[1] ION ASSOCIATION AND ELECTRIC-FIELD EFFECTS ON ELECTRON HOPPING IN REDOX POLYMERS - APPLICATION TO THE OS(BPY)3(3+)/2+ COUPLE IN NAFION [J].