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Synthesis, characterization of heterodinuclear Co‐Cu complex and its electrocatalytic activity towards O 2 reduction: Implications for cytochrome c oxidase active site modeling
Author(s) -
Lu WeiBing,
Wang CunXin,
Zhou XiaoHai,
Ren JianGuo
Publication year - 2003
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20030210916
Subject(s) - chemistry , benzimidazole , cobalt , active site , copper , tetraphenylporphyrin , ligand (biochemistry) , amine gas treating , inorganic chemistry , glassy carbon , electrocatalyst , electrochemistry , aqueous solution , cytochrome , medicinal chemistry , combinatorial chemistry , photochemistry , catalysis , porphyrin , cyclic voltammetry , organic chemistry , electrode , enzyme , biochemistry , receptor
A new dinucleating ligand consisting of a tetraphenylporphyrin derivative covalently linked with tris(2‐benzimidazylmethyl)‐amine and its homodinuclear Co‐Co and heterodinuclear Co‐Cu complexes were synthesized and spectroscopically characterized. The heterobimetallic cobalt‐copper complex bearing three benzimidazole ligands for copper, as cytochrome c oxidase active site model, was applied to the surface of glassy carbon electrode to show electrocatalytic activity for O 2 reduction in aqueous solution at an acidity level close to physiological pH value. The kinetic parameters of this electrocatalytic process were obtained.