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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.
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.