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The triplet state of 1,6-diphenyl-1,3,5-hexatriene and 1,8-diphenyl-1,3,5,7-octatetraene

✍ Scribed by R. Bensasson; E.J. Land; J. Lafferty; R.S. Sinclair; T.G. Truscott

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 305 KB
Volume: 41
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(76)80823-8

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✦ Synopsis

triplet-triplet absorption spectra, quantum efficiencies of intersystem crossin g, triplet extinction coefficients, and triplet energy levels of 1,6diphenyl-1,3,5hexatriene, and 1,GliphenyL1,3,5,7-octatetraene, in ethanol and benzene have been obtained. l%e quantum efficiencies of intersystem crossing are found to be less than 0.03 for both molecules in both solvents, indicating that the excited sindet is efficiently deactivated by internal conversion and f!uorescence emission. The triplet-triplet absorption spectra and the triplet energy level of 1.6-diphenyL1,3J-hexatriene are compared with previous results in other solvent systems.

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