Charge transfer from donor to photoexcited Ru(bpy)(3)(2+) in solution and polymer matrix

被引:12
作者
Nagai, K
Nishijima, T
Takamiya, N
Tada, M
Kaneko, M
机构
[1] IBARAKI UNIV,FAC SCI,MITO,IBARAKI 310,JAPAN
[2] WASEDA UNIV,SCH SCI & ENGN,DEPT CHEM,SHINJUKU KU,TOKYO 169,JAPAN
关键词
charge transfer; photoexcited Ru(bpy)(3)(2); polymer matrix;
D O I
10.1016/1010-6030(95)04171-2
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
Electron transfer quenching of photoexcited Ru(bpy)(3)(2+) (bpy, bipyridine) by three kinds of hole transport material, phenothiazine (PTZ) and 10-methylphenothiazine (MPTZ) was studied in acetonitrile solution and a polymer film. The quenching rate constants (k(q)) with respect to Delta G in acetonitrile solution are discussed in terms of Marcus theory. In poly(ethyleneoxide) (PEG) films, quenching of photoexcited Ru(bpy)(3)(2+) was observed and analysed by a static quenching model. The electron transfer distance in the polymer film was found to be 1.1-1.9 nm using a modified Perrin equation considering the excluded volume effect. The dependence of the electron transfer rate on Delta G in the PEO film was larger than that in acetonitrile solution.
引用
收藏
页码:47 / 51
页数:5
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