A low-lying weak transition in the polyene α,ω-diphenyloctatetraene

B. S. Hudson, B. E. Kohler

Research output: Contribution to journalArticlepeer-review

391 Scopus citations


Optical absorption and emission spectra at liquid helium temperatures of solutions of α,ω-diphenyloctatetraene (DPO) in single crystal bibenzyl and polycrystalline n-paraffins have been measured. These measurements show that (1) there is an excited singlet state at lower energy than the 1B1u state responsible for the strong absorption at 4100 Å: (2) the presence of this state rationalizes a number of distinctive characteristics of polyene spectra which had previously been explained on the basis of "Franck-Condon forbiddeness". Evidence that these results describe a general property of polyene electronic structure which is not specific to DPO is presented.

Original languageEnglish (US)
Pages (from-to)299-304
Number of pages6
JournalChemical Physics Letters
Issue number3
StatePublished - Jun 1 1972

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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