Friday, 15 July 2005 - 10:45 AM
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This presentation is part of: Symposia: Organic Electrochemistry

Electrochemical Catalysis by Crosslinked Films of Cobalt- Reconstituted Myoglobin and Poly (L-lysine) in a Bicontinuous Microemulsion

Covalently-linked films of Cobalt protoporphyrin IX- reconstituted Myoglobin (CoMb) and poly –L- lysine (PLL) were built on the surfaces of oxidized carbon cloth electrodes for evaluation of catalytic applications. These films were characterized by UV-Vis spectroscopy, circular dichroism and voltammetry in a bicontinuous cetyltrimethylammonium bromide (CTAB) microemulsion. Spectroscopy of the film suggested that the protein retained its native conformation. Voltammetry of the films gave well defined, quasi-reversible Co^III/Co^II and Co^II/Co^I peaks in the microemulsion. Peaks for the Co^III/Co^II redox couple of CoMb were observed for the first time. The CoMb-PLL films catalyzed the debromination of ethylene dibromide (EDB) and 1,2- dibromocyclohexane (DBCH) in the microemulsion .

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