Dynamics of Radical Pair Reactions in Micelles

I. R. Gould, M. B. Zimmt, N. J. Turro, B. H. Baretz, G. F. Lehr

Research output: Contribution to journalArticle

68 Scopus citations

Abstract

The time-resolved behavior of sec-phenethy, cumyl and dinhenylmethyl radicals as radical pairs solubilized in micelles has been observed using pulsed laser photolysis. The decay of the micellized radical pairs consists of a fast component (20–2000 X 10−9 s), attributed to reaction within the geminate radical pair, and a slow component (>2000 X 10−9 s), attributed to reactions from random encounters of radicals. The extent of geminate pair reaction (micellar cage reaction) depends upon the competition between the rate constants for reaction and diffusive separation. The rate constants for the reaction and diffusion processes are determined and the nature of these processes is discussed. A correlation is found between the extent of fast decay observed in the time-resolved experiments and the extent of cage reaction determined from steady-state photolysis.

Original languageEnglish (US)
Pages (from-to)4607-4612
Number of pages6
JournalJournal of the American Chemical Society
Volume107
Issue number16
DOIs
StatePublished - Aug 1985

ASJC Scopus subject areas

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

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    Gould, I. R., Zimmt, M. B., Turro, N. J., Baretz, B. H., & Lehr, G. F. (1985). Dynamics of Radical Pair Reactions in Micelles. Journal of the American Chemical Society, 107(16), 4607-4612. https://doi.org/10.1021/ja00302a001