Silylation of carbon surfaces through the electrochemical reduction of 2,2'-bipyR 3 SiCl adducts
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چکیده
Electrochemical reduction of complexes of monochlorosilanes with redox-active ligands such as 2,2'-bipy occurs in one-electron fashion at moderately negative potentials, E @ -1 V vs SCE (in CH3CN/0.1 M Bu4NBF4), leading to silyl radicals. These radicals, trapped with a-phenyl-N-tbutyl-nitrone and characterized as spin-adducts by ESR spectroscopy, add to carbon interfaces (glassy carbon, graphite) providing an efficient method of covalent Si-C silylation of such surfaces. Silylated interfaces were studied by voltammetry, EIS, SEM, EDS, and FTIR spectroscopy.
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تاریخ انتشار 2017