Larger than expected free ion yields from the photoexcited trans-stilbene/fumaronitrile CT complex in a variety of solvents

被引：9

作者：

Findley, BR ^{[1
]}

Smirnov, SN ^{[1
]}

Braun, CL ^{[1
]}

机构：

[1] Dartmouth Coll, Dept Chem, Burke Lab 6128, Hanover, NH 03755 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 1998年 / 102卷 / 32期

关键词：

D O I：

10.1021/jp980720g

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：

Measurements of the quantum yields of photoinduced charge escape for trans-stilbene and fumaronitrile solutions in solvents of different polarity reveal unexpectedly large yields upon direct excitation of the groundstate charge-transfer (CT) complex. Our current explanation, which proposes relaxation of at least a portion of the excited, Franck-Condon, CT pairs into remote ion pairs with thermalized initial separations of up to 10-15 Angstrom, is speculative but emphasizes the need for a substantial revision of the usual picture of ionic charge separation and recombination.

引用

页码：6385 / 6389

页数：5

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