Reorganization energies and rate constants for electron reactions in glass-forming media and proteins

Brian M. Hoffman, Mark A Ratner

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

We discuss situations occurring in intramolecular electron transfer in glassy solvents and in proteins which themselves undergo glassing transitions. In these circumstances slow solvent relaxation causes the reaction pathway to vary substantially from the equilibrium reaction path, resulting in increased effective barriers and reduced effective outer-sphere reorganization energies compared to the transition-state (equilibrium) result. This effect is modelled simply by introducing a temperature dependent reorganization energy. Through inclusion of these non-equilibrium effects, sharp falloffs of electron transfer rate with decreasing temperature can be modelled with reasonable values of the equilibrium reorganization energy, rather than the inappropriately large values needed otherwise.

Original languageEnglish
Pages (from-to)233-238
Number of pages6
JournalInorganica Chimica Acta
Volume243
Issue number1-2
Publication statusPublished - Feb 29 1996

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Glass
Rate constants
Electrons
proteins
Proteins
Temperature
glass
electron transfer
electrons
energy
inclusions
temperature
causes

Keywords

  • Electron transfer
  • Glassy solvents
  • Reorganization energy
  • Solvent dynamics

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Reorganization energies and rate constants for electron reactions in glass-forming media and proteins. / Hoffman, Brian M.; Ratner, Mark A.

In: Inorganica Chimica Acta, Vol. 243, No. 1-2, 29.02.1996, p. 233-238.

Research output: Contribution to journalArticle

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