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Silylation of carbon surfaces through the electrochemical reduction of 2,2?-bipy•R3SiCl adducts

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 ?-phenyl-N-t-butyl-nitrone and characterized as spin-adducts by ESR spectroscopy, add to carbon interfaces (glassy carbon, graphite) providing an ef?cient method of covalent Si–C silylation of such surfaces. Silylated interfaces were studied by voltammetry, EIS, SEM, EDS, and FTIR spectroscopy.


Auteur(s) : Mamadou Dieng, Jacques Simonet, Viatcheslav Jouikov
Pages : 33–36
Année de publication : 2015
Revue : Electrochemistry Communications
N° de volume : 53
Type : Article
Mise en ligne par : DIENG Mamadou