Study of anisotropic interfacial electron transfer across a semiconductor/solution interface by time-resolved EPR spectroscopy

被引：2
|
作者：
Akiyama, K [1 ]
Hashimoto, S
Tojo, S
Ikoma, T
Tero-Kubota, S
Majima, T
机构：
[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
[2] Osaka Univ, Inst Sci & Ind Res SANKEN, Osaka 5670047, Japan
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2005年 / 44卷 / 23期
关键词：
electron transfer; EPR spectroscopy; nanoparticles; radical pair; semiconductors;
D O I：
10.1002/anie.200461681
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Figure Presented) Xanthene dyes absorbed onto colloidal TiO2 exhibit spin-polarized EPR spectra when excited with pulses of visible light at low temperatures (see schematic representation). Analysis of the spectra enables the range of distances between the electron and the dye radical cation as well as their relative orientations to be determined. Furthermore, an orientational selectivity in electron transfer across the semiconductor nanoparticle is observed. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：3591 / 3594
页数：4
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