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

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

Research output: Contribution to journal › Article

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
Externally published	Yes

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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

Cite this

Hotchandani, S., Ozdemir, U., Allakhverdiev, S., Karacan, N., Klimov, V. V., Kamat, P. V., & Carpentier, R. (2000). Redox characteristics of manganese and cobalt complexes obtained from pyridine N-oxide. Bioelectrochemistry and Bioenergetics, 51(2), 175-180. https://doi.org/10.1016/S0302-4598(00)00068-4

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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)",

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AU - Hotchandani, S.

AU - Ozdemir, U.

AU - Allakhverdiev, Suleyman

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.

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KW - Cyclic voltammetry

KW - Manganese complex

KW - Photosystem II (PS II)

KW - Redox characteristics

KW - Water oxidizing complex (WOC)

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10.1016/S0302-4598(00)00068-4