A NEW ASPECT OF PHOTOINDUCED ELECTRON-TRANSFER IN ACETONITRILE
A NEW ASPECT OF PHOTOINDUCED ELECTRON-TRANSFER IN ACETONITRILE
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DOI：
10.1016/1010-6030(92)85039-w
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发表时间：
1992-04-30
影响因子：
4.3
通讯作者：
KIKUCHI, K
中科院分区：
文献类型：
--
作者：
KIKUCHI, K
总结了乙腈中异构体形成的四种证据。他们指出，电子供体-受体体系的荧光猝灭机制取决于(i)有效猝灭距离和（ii）实际电子转移的自由焓变以及（iii）溶剂极性。结果表明，Rehm-Weller关系（以及其中缺乏反转区域）可以同时考虑(i)和（ii）来解释。提出了确定高放热区淬火机理的判据。
Four kinds of evidence for exciplex formation in acetonitrile are summarized. They indicate that the fluorescence quenching mechanism of an electron donor-acceptor system depends on (i) effective quenching distance and (ii) free-enthalpy change of actual electron transfer in addition to (iii) solvent polarity. It is shown that the Rehm-Weller relationship (and the lack of an inverted region in it) is interpreted by taking into account both (i) and (ii). A criterion for determining the quenching mechanism in a highly exothermic region is proposed.