Solvent effects on intramolecular proton transfer

Y. R. Kim, J. T. Yardley, R. M. Hochstrasser

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The proton transfer times for a 2-phenyl-benzotriazole (HOPB) having an octyl group on the 5-position are essentially the same as those found earlier with 5-methyl substituent but the overall rotational reorientation time is significantly increased with the octyl substituent. A systematic study of the proton transfer in 1-alkanols has revealed that the rates for both methyl and octyl derivatives are close to the solvent longitudinal relaxation times, τL. Significant solvation of excited molecules is not occurring during the proton transfer lifetime. It is concluded that the proton transfer is a tunneling process that is slowed down by the multidimensionality of the potential surface and by the solvent fluctuations.

Original languageEnglish
Pages (from-to)311-319
Number of pages9
JournalChemical Physics
Volume136
Issue number2
DOIs
Publication statusPublished - 1989 Sep 15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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