Electropolymerization Mechanism in Aqueous Solution of the Oxo-Manganese Complex Biomimicking of the Enzymatic Center Present on the Photosystem II

摘要

The [Mn_4~(IV)O_5(terpy)_4(H_2O)_2]~(6+) complex, show great potential for electrode modification by electropolymerization using cyclic voltammetry. The electropolymerization mechanism was based on the electronic transfer between dx~2-y~2 orbitals of the center metallic and pπ orbital of the ligand, which show great complexity of the system due to orbitals overlap present in octahedral complex of the metal-μ-oxo. The voltammetric behavior both in and after electropolymerization process were also discussed, where the best condition of electropolymerization was observed for low scan rate and 50 potential cycles. A study in ITO/glass electrode for better characterization of polymer was also performed.