Redox characteristics of manganese and cobalt complexes obtained from pyridine N-oxide

S. Hotchandani, U. Ozdemir, S. I. Allakhverdiev, N. Karacan, V. V. Klimov, P. V. Kamat, R. Carpentier

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Manganese and cobalt complexes, using pyridine N-oxide as ligand, have been synthesized, and their cyclic and square-wave voltammetric measurements have been carried out. The results reveal that the complexes exhibit different voltammetric pattern, which suggests that the redox processes are most probably metal-centered. In both complexes, extra redox activity is observed once the potential exceeds certain value of the voltage. The observation of an oxidation wave in manganese complex at +0.75 V vs. Ag/AgCl or +0.95 V vs. NHE strongly suggests that this complex can bring about oxidation of water and can, thus, serve as a synthetic analogue of water oxidizing complex (WOC) of PS II. Copyright (C) 2000 Elsevier Science S.A.

Original languageEnglish
Pages (from-to)175-180
Number of pages6
JournalBioelectrochemistry and Bioenergetics
Volume51
Issue number2
DOIs
Publication statusPublished - Jun 2000

Keywords

  • Cobalt complex
  • Cyclic voltammetry
  • Manganese complex
  • Photosystem II (PS II)
  • Redox characteristics
  • Water oxidizing complex (WOC)

ASJC Scopus subject areas

  • Biophysics
  • Physical and Theoretical Chemistry
  • Electrochemistry

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