Concerted electron and proton movement in quenching of triplet C60 and tetracene fluorescence by hydrogen-bonded phenol-base pairs

László Biczók, Henry Linschitz

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Abstract

The quenching of triplet C60 and tetracene fluorescence by phenols is strongly enhanced by added pyridines. Evidence that this is due to quenching by hydrogen-bonded phenol-base pairs is given by the close agreement between equilibrium constants for hydrogen-bond formation derived from kinetic measurements and from independent spectroscopic data. The effect is attributed to a trimolecular transition state in which electron transfer from the phenol to the excited molecule is concerted with proton movement from the incipient strongly acidic phenol cation radical to the hydrogen-bonded base.

Original languageEnglish
Pages (from-to)1843-1845
Number of pages3
JournalJournal of physical chemistry
Volume99
Issue number7
DOIs
Publication statusPublished - Jan 1 1995

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ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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