title: Covalent attachment of catalyst molecules to conductive diamond: CO2 reduction using "smart" electrodes.
abstract: We report here covalent attachment of a catalytically active cobalt complex onto boron-doped, p-type conductive diamond. Peripheral acetylene groups were appended on a cobalt porphyrin complex, and azide-alkyne cycloaddition was used for covalent linking to a diamond surface decorated with alkyl azides. The functionalized surface was characterized by X-ray photoelectron spectroscopy and Fourier transform IR spectroscopy, and the catalytic activity was characterized using cyclic voltammetry and FTIR. The catalyst-modified diamond surfaces were used as "smart" electrodes exhibiting good stability and electrocatalytic activity for electrochemical reduction of CO(2) to CO in acetonitrile solution.
authors.affiliation: Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States.
authors.forename: Shu A
authors.initials: SA
authors.lastname: Yao
authors.forename: Rose E
authors.initials: RE
authors.lastname: Ruther
authors.forename: Linghong
authors.initials: L
authors.lastname: Zhang
authors.forename: Ryan A
authors.initials: RA
authors.lastname: Franking
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Hamers
authors.forename: John F
authors.initials: JF
authors.lastname: Berry