Exciplex and Triplex Emission in the System 9,10-Dichloroanthracene-2,5-Dimethyl-2,4-hexadiene

Jack Saltiel, David E. Townsend, Brant D. Watson, Patrick Shannon

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


Steady-state and transient fluorescence measurements have been made using mixtures of 9,10-dichloroanthracene and 2,5-dimethyl-2,4-hexadiene in benzene and acetonitrile. In benzene a fluorescent exciplex, λmax ∼485 nm, τ 7.4 nsec, forms reversibly with an estimated equilibrium constant for exciplex formation at room temperature of 20 ± 1 M-1. In contrast, no exciplex fluorescence is observed from acetonitrile solutions at intermediate diene concentrations, but triplex fluorescence λmax ∼543 nm and τ 3.6 nsec, is observed at higher diene concentrations. Steady-state fluorescence observations in the presence of air are also described.

Original languageEnglish (US)
Pages (from-to)5688-5695
Number of pages8
JournalJournal of the American Chemical Society
Issue number20
StatePublished - Oct 1 1975

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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