Formation and decay of styrene-amine exciplexes

Frederick D. Lewis*, Dario M. Bassani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


The formation and decay of the fluorescent exciplexes formed between two styrenes (trans-1-phenylpropene and trans-1-(4-cyanophenyl)propene) and two trialkylamines (triethylamine and diisopropylethylamine) were investigated using steady state and transient fluorescence measurements. The standard exciplex kinetic scheme has been expanded for the first time to include quenching of a reversibly-formed exciplex by ground state amine. Analysis of the data for the four exciplex systems provides examples of the four possible modes of exciplex formation (reversible and irreversible) and decay (quenched and unquenched). An anticipated, an increase in the driving force for exciplex formation leads to a decrease in the rate constant for exciplex dissociation, while an increase in the steric bulk of the amine leads to a decrease in the rate constant for exciplex quenching by ground state amine.

Original languageEnglish (US)
Pages (from-to)43-52
Number of pages10
JournalJournal of Photochemistry and Photobiology, A: Chemistry
Issue number1
StatePublished - May 29 1992

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Physics and Astronomy


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