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Studies of T2→S2 intersystem crossing for coumarins

✍ Scribed by Pi-Tai Chou; Marty L. Martinez; Shannon L. Studer

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
445 KB
Volume
188
Category
Article
ISSN
0009-2614

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✦ Synopsis

Transient absorption and two-step laser-induced fluorescence studies ofcoumarin (CM), 'I-hydroxy-4-methylcoumarin (7HMC) and 7diethylamino-4-methylcoumarin (7DAMC) were performed to determine GJ,~, the yield of T,+S, ISC. 9 was measured to be 8.4~ 10m4and 1.4X 10-j for 7HMC and 7DAMC. respectively. The results can be rationalized by the proposed mechanism incorporating T.,.+S,,. LSC.

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