Photoinduced Electron Transfer Reactions of Hexarhenium(III) Cluster: Oxidative Quenching of [Re6S8Cl6]4- Emission by Electron Acceptors
Photoinduced Electron Transfer Reactions of Hexarhenium(III) Cluster: Oxidative Quenching of [Re6S8Cl6]4- Emission by Electron Acceptors
复制标题
六铼(III)簇的光致电子转移反应：电子受体对[Re6S8Cl6]4-发射的氧化猝灭
DOI：
10.1007/s10876-014-0729-x
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发表时间：
2014
影响因子：
2.8
通讯作者：
Y. Sasaki
中科院分区：
文献类型：
--
作者：
N. Kitamura;N. Kobayashi;S. Ishizaka;T. Yoshimura;H.-B. Kim;Y. Sasaki
通过一系列中性有机电子受体（A）对六铼（III）簇合物[Re 6（μ3-S）8 Cl 6]4-的发光猝灭实验，研究了该簇合物在乙腈中的光氧化还原能力。光诱导电子转移猝灭速率常数和相关活化参数表明，六铼（III）簇合物对A具有光氧化还原增敏作用，由于子离子[Re 6（μ3-S）8 Cl 6]3-与A-之间的静电排斥作用，体系具有较高的电荷分离产率.这些结果得到了纳秒瞬态吸收光谱的明确证明。
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 variousAand the system gave a high charge separation yield owing to electrostatic repulsion between the product ions: [Re6(μ3-S)8Cl6]3−andA−. These results were proved explicitly by nanosecond transient absorption spectroscopy.