Silylation of carbon surfaces through the electrochemical reduction of 2,2′-bipy·R 3 SiCl adducts - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Electrochemistry Communications Année : 2015

Silylation of carbon surfaces through the electrochemical reduction of 2,2′-bipy·R 3 SiCl adducts

Résumé

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 CH 3 CN/0.1 M Bu 4 NBF 4), leading to silyl radicals. These radicals, trapped with α-phenyl-N-t-butyl-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.

Domaines

Chimie organique
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Dates et versions

hal-01132166 , version 1 (29-10-2015)

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Mamadou Dieng, Jacques Simonet, Viatcheslav Jouikov. Silylation of carbon surfaces through the electrochemical reduction of 2,2′-bipy·R 3 SiCl adducts. Electrochemistry Communications, 2015, 53, pp.33-36. ⟨10.1016/j.elecom.2015.02.008⟩. ⟨hal-01132166⟩
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