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Spectral and photophysical behavior of 2,4,6,8,10-dodecapentaenal and schiff base: evidence for a low-lying singlet excited state of forbidden character

✍ Scribed by Ralph S. Becker; Paritosh K. Das; Gregory Kogan

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 243 KB
Volume: 67
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(79)85205-7

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✦ Synopsis

A weakly allowed state, assigned to be of 1A~ character, is observed to be the lowest excited singlet state in the one photon absorption and excitation spectra of 2,4,6,8,10-dodecapentaenal. This assignment is consistent with the fluorescence quantum yield and intrinsic lifetime data of the polyenal. Similar results have been obtained for the Schiff base derivative of this linear polyenal.