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

doi:10.1016/S0302-4598(00)00068-4

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 Institute for Interdisciplinary Science

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	175-180
Number of pages	6
Journal	Bioelectrochemistry and Bioenergetics
Volume	51
Issue number	2
DOIs	https://doi.org/10.1016/S0302-4598(00)00068-4
Publication status	Published - Jun 1 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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title = "Redox characteristics of manganese and cobalt complexes obtained from pyridine N-oxide",

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.",

keywords = "Cobalt complex, Cyclic voltammetry, Manganese complex, Photosystem II (PS II), Redox characteristics, Water oxidizing complex (WOC)",

author = "S. Hotchandani and U. Ozdemir and Allakhverdiev, {S. I.} and N. Karacan and Klimov, {V. V.} and Kamat, {P. V.} and R. Carpentier",

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T1 - Redox characteristics of manganese and cobalt complexes obtained from pyridine N-oxide

AU - Hotchandani, S.

AU - Ozdemir, U.

AU - Allakhverdiev, S. I.

AU - Karacan, N.

AU - Klimov, V. V.

AU - Kamat, P. V.

AU - Carpentier, R.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - 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.

AB - 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.

KW - Cobalt complex

KW - Cyclic voltammetry

KW - Manganese complex

KW - Photosystem II (PS II)

KW - Redox characteristics

KW - Water oxidizing complex (WOC)

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