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Evaluation of the coupling constants between the 2 1Ag (S1) and 1 1Bu (S2) states for diphenylhexatriene and diphenyloctatetraene

✍ Scribed by Takao Itoh

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 285 KB
Volume: 159
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)87421-4

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✦ Synopsis

The S, (2 '4) and St ( I 'B,) fluorescence intensities for diphenylhexatriene and diphenyloctatetraene in room temperature solvents with different polarizabilities have been analyzed quantitatively with a refined treatment. The coupling constants between the S1 and S2 states have been evaluated to be 140 and 90 cm-' for diphenylhexatriene and diphenyloctatetraene, respectively. These values are compared with those obtained from the fluorescence quantum yields and lifetimes.

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