What optical electron-transfer reactions can teach us about electrode kinetics and electrocatalysis

Robert L. Blackbourn, Stephen K. Doorn, Jody A. Roberts, Joseph T Hupp

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A number of ingredients are known or thought to be important in determining rates of electrochemical reactions and, therefore, mechanisms of electrocatalysis. These ingredients may include bond reorganization, solvent reorganization, electronic coupling, ion pairing, proton demand, "work terms", and free-energy driving-force effects. Although evidence exists, in general, for a detectable role for each one of these, for specific cases there is inevitably uncertainty about the relative importance of each effect. Fortunately, optical electron-transfer measurements provide an unambiguous way of partitioning rates into their component effects. The theme of this article is the use of optical processes to learn about molecular level kinetic events and, by inference, molecular level electrocatalysis. We begin by exploring the relationships between electrode processes and analogous optical reactions. Following that, some applications to problems of electrochemical interest - largely drawn from our own recent work - are illustrated. Although the focus is mainly on uncomplicated, single-electron-transfer reactions, preliminary studies of more complicated processes like proton-coupled electron transfer are also mentioned.

Original languageEnglish
Pages (from-to)696-706
Number of pages11
JournalLangmuir
Volume5
Issue number3
Publication statusPublished - 1989

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Electrocatalysis
electron transfer
ingredients
Electrodes
Kinetics
electrodes
Electrons
Protons
kinetics
protons
inference
Free energy
free energy
Ions
electronics
ions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

What optical electron-transfer reactions can teach us about electrode kinetics and electrocatalysis. / Blackbourn, Robert L.; Doorn, Stephen K.; Roberts, Jody A.; Hupp, Joseph T.

In: Langmuir, Vol. 5, No. 3, 1989, p. 696-706.

Research output: Contribution to journalArticle

Blackbourn, Robert L. ; Doorn, Stephen K. ; Roberts, Jody A. ; Hupp, Joseph T. / What optical electron-transfer reactions can teach us about electrode kinetics and electrocatalysis. In: Langmuir. 1989 ; Vol. 5, No. 3. pp. 696-706.
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