Diffusion can explain the nonexponential rebinding of carbon monoxide to protoheme

Jeffrey B. Miers, Jay C. Postlewaite, Taehyoung Zyung, Sheah Chen, Gary R. Roemig, Xiaoning Wen, Dana D. Dlott, Attila Szabo

Research output: Contribution to journalArticlepeer-review

Abstract

The recombination after flash photolysis of carbon monoxide (CO) to protoheme (PH) in glycerol: water is studied over ten decades in time (1 ps to 10 ms). The rebinding consists of an initial nonexponential geminate phase followed by a slower exponential bimolecular phase. The entire time course of this reaction between 260 and 300 K can be explained in a unified way using a simple, analytically tractable diffusion model involving just three parameters: the relative diffusion constant, the contact radius, and the intrinsic rate of reaction at contact.

Original languageEnglish (US)
Pages (from-to)8771-8776
Number of pages6
JournalThe Journal of Chemical Physics
Volume93
Issue number12
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

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

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