PHOTOPHYSICAL PROCESSES IN TROPOLONE, α‐METHOXY‐TROPONE AND COLCHICINE

Robert Croteau, Roger M. Leblanc

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Abstract— The spectral characteristics of the emission observed from tropolone, α‐methoxy‐tropone and colchicine in EPA at 77 K are reported. Luminescence polarization, lifetime, quantum yield and energy transfer experiments provide evidence that the luminescence observed is S1→ S0 fluorescence and that the lowest excited singlet state is π, π* The two compounds α‐methoxy‐tropone and colchicine have been found to exhibit dual luminescence. No phosphorescence could be detected in these three molecules. The photophysical processes for each molecule are discussed and their respective energy level diagrams are also suggested.

Original languageEnglish (US)
Pages (from-to)33-38
Number of pages6
JournalPhotochemistry and Photobiology
Volume28
Issue number1
DOIs
StatePublished - Jul 1978
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry

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