New multi-charged viologen derivatives. Part 1. Electrochemical behaviour in Nafion films

Zeev Porat, Yves M. Tricot, Israel Rubinstein, Baruch Zinger

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


The electrochemical behaviour of new viologen derivatives, C5V3+ and C5V4+, has been studied in Nafion® films on gold electrodes. The new viologens bear extra positive charges with respect to methyl viologen (MV2+). They remain positively charged upon two-electron reduction, while MV2+ is reduced to a neutral form under similar conditions. This fundamental distinction is shown to induce a substantial difference in the voltammetric behaviour and stability of C5V3+ and C5V4+ in Nafion films compared with MV2+. These differences are discussed in terms of a model suggested previously for the electrochemical behaviour of electrode couples comprising neutral/cationic forms in Nafion. The model considers the influence of the inner structure of the polymer on electrochemical reactions occurring therein.

Original languageEnglish
Pages (from-to)217-223
Number of pages7
JournalJournal of Electroanalytical Chemistry
Issue number1-2
StatePublished - 10 Oct 1991
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • General Chemical Engineering
  • Electrochemistry


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