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STUDIES OF T2-]S1 INTERSYSTEM CROSSING FOR COUMARINS

被引：13
作者：
CHOU, PT
MARTINEZ, ML
STUDER, SL
机构：
[1] Department of Chemistry, University of South Carolina, Columbia
来源：
CHEMICAL PHYSICS LETTERS | 1992年 / 188卷 / 1-2期
关键词：
D O I：
10.1016/0009-2614(92)85087-Q
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：
Transient absorption and two-step laser-induced fluorescence studies of coumarin (CM), 7-hydroxy-4- methylcoumarin (7HMC) and 7-diethylamino-4-methylcoumarin (7DAMC) were performed to determine PHI-ts, the yield of T2 --> S1 ISC. PHI-ts was measured to be 8.4 X 10(-4) and 1.4 X 10(-3) for 7HMC and 7DAMC, respectively. The results can be rationalized by the proposed mechanism incorporating T(n-pi*) --> S(pi-pi*) ISC.
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页码：49 / 53
页数：5
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