Photoinduced Electron Transfer Reactions of Hexarhenium(III) Cluster: Oxidative Quenching of [Re6S8Cl6]4− Emission by Electron Acceptors

被引：0
|
作者：
Noboru Kitamura
Natsuki Kobayashi
Shoji Ishizaka
Takashi Yoshimura
Haeng-Boo Kim
Yoichi Sasaki
机构：
[1] Hokkaido University,Department of Chemistry, Faculty of Science
[2] Hiroshima University,Department of Chemistry, Graduate School of Science
[3] Osaka University,Radioisotope Research Center
[4] Ibaraki University,Department of Chemistry, Faculty of Science
来源：
Journal of Cluster Science | 2015年 / 26卷
关键词：
Hexarhenium(III) cluster; Photoinduced electron transfer; Charge separation;
D O I：
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中图分类号：
学科分类号：
摘要：
The photoredox ability of a hexarhenium(III) cluster, [Re6(μ3-S)8Cl6]4−, in acetonitrile was examined on the basis of the emission quenching experiments of the cluster by a series of neutral organic electron acceptors (A). The photoinduced electron transfer quenching rate constants and the relevant activation parameters demonstrated that the hexarhenium(III) cluster acted as a useful photoredox sensitizer towards various A and the system gave a high charge separation yield owing to electrostatic repulsion between the product ions: [Re6(μ3-S)8Cl6]3− and A−. These results were proved explicitly by nanosecond transient absorption spectroscopy.
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页码：211 / 221
页数：10
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