Electrochemical Behavior of the Complex of Cobalt-Bipyridyl on Gold Electrode and Interaction of the Complex with Adenine

Abstract

Abstract: Electrochemical behavior of Co (bpy)₃²⁺ on gold electrode and interaction of thiscomplex with adenine was investigated.Voltammetric experiments indicated that the electro-chemistry of Co(bpy)₃²⁺ on gold electrode was quasi-reversible with one-electron transfer re-action in phosphate buffer(pH=7.0).The formal potential, E°'was 0.057 V.The electrontransfer rate constant, K_S, was 1.43×10^-2 cm/s.This property was characterized by spec-troelectrochemistry.Both anodic and cathodic peak potentials shifted to more positive valuesin the presence of adenine.In this case, E°'shifted to more positive potentials by 15 mV.The K_S'descended about three times.The complex ratio was 1: 1.The complex constant was64.2 L/mol.The interaction was testified by electrochemistry and spectrum of adenine.

Key words: Complex of cobalt-bipyridyl, Adenine, Electrochemistry, In situ spectroelectrochemistry

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ZHAO Guang-Chao, WANG Xue-Mei, CHEN Hong-Yuan. Electrochemical Behavior of the Complex of Cobalt-Bipyridyl on Gold Electrode and Interaction of the Complex with Adenine[J]. Chem. J. Chinese Universities, 1997, 18(4): 547.

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Electrochemical Behavior of the Complex of Cobalt-Bipyridyl on Gold Electrode and Interaction of the Complex with Adenine

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