Electron transfer at a planar bilayer lipid membrane incorporated with 7,7,8,8-tetracyanoquinodimethane studied by ac impedance spectroscopy

Hiroshi Yamada, Hitoshi Shiku, Tomokazu Matsue, Isamu Uchida

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The heterogeneous electron-transfer rate constants for Co(phen)32+/3+ and Fe(CN)64-/3- at the bilayer lipid membrane (BLM) saturated with tetracyanoquinodimethane (TCNQ) were respectively (3 ± 1) × 10-4 and <2 × 10-8 cm/s, determined by ac impedance spectroscopy. The large difference in the rate constants was explained by hydrophobic interaction between the interior of the BLM and the redox species, by the electrostatic interaction between the negatively-charged surface and the redox species in solution, and by the difference in formal potential between TCNQ and the redox species.

Original languageEnglish
Pages (from-to)9547-9549
Number of pages3
JournalJournal of physical chemistry
Volume97
Issue number38
DOIs
Publication statusPublished - 1993 Jan 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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