Electrochemical proton relay at the single-molecule level

A. M. Kuznetsov, I. G. Medvedev, Jens Ulstrup

Research output: Contribution to journalJournal articleResearchpeer-review


A scheme for the experimental study of single-proton transfer events, based on proton-coupled two-electron transfer between a proton donor and a proton acceptor molecule confined in the tunneling gap between two metal leads in electrolyte solution is suggested. Expressions for the electric current are derived and compared with formalism for electron tunneling through redox molecules. The scheme allows studying the kinetics of proton and hydrogen atom transfer as well as kinetic isotope effects at the single-molecule level under electrochemical potential control.
Original languageEnglish
JournalElectrochemistry Communications
Issue number6
Pages (from-to)1170-1173
Publication statusPublished - 2009


  • Single-molecule processes
  • Hydrogen atom transfer
  • Proton transfer
  • Scanning tunneling microscopy
  • Concerted electron/proton transfer


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