Electron transfer kinetics of methylviologen included in 4-sulfonatocalix[n]arenes at glassy carbon electrode; adiabaticity and activation energy

Yuki Takahashi, Takashi Fujihara, Naritaka Kobayashi, Seiichiro Nakabayashi, Zsombor Miskolczy, László Biczók

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Quasi-reversible single electron transfer (ET) kinetics of methylviologen partly-included at the rim of 4-sulfonatocalix[n]arenes (n = 4,6 and 8) has been investigated in aqueous solution. ET rates were measured by Nicholson method with relatively large potential scan rates (0.9 V/s < v < 50 V/s). ET proceeded adiabatically on the direct collision between the MV+/MV2+ and the electrode surface. The host-guest binding equilibrium at the activation state was not established under the high-speed cyclic voltammetry condition. The non-equilibrium stabilization energy was independent of the size of the cavitands. The activation energy of ET under the partly-included condition was 70–80% of that without any inclusion.

Original languageEnglish
Pages (from-to)222-227
Number of pages6
JournalChemical Physics Letters
Publication statusPublished - Sep 16 2018


ASJC Scopus subject areas

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

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