Iridium and ruthenium complexes covalently bonded to carbon surfaces by means of electrochemical oxidation of aromatic amines
Articolo
Data di Pubblicazione:
2010
Abstract:
Bis(2-phenylpyridinate-C2,N)-(4-(4-aminophenyl)-2,2'-bipyridine) iridium(III) hexafluorophosphate and bis(2,2'-bipyridine-N,N')-(4-(4-aminophenyl)-2,2'-bipyridine) ruthenium(II) hexafluorophosphate were synthesized and characterized. In particular, electrochemical analyses showed irreversible amine-centred oxidations, which were exploited to functionalize a glassy carbon electrode. The functionalization was achieved by electrochemical oxidation of the amino group. Surface modification was observed and studied via electrochemical techniques (cyclic voltammetry, square wave voltammetry).
The functionalization was performed at different potential values, and the effect of the collidine (2,4,6-trimethylpyridine) was evaluated. The surface coverage was assessed by integration of the peak current of the modified electrode signal. The formation of monolayers or multilayers depends on the oxidation
potential used and on the presence of collidine in the functionalization cell.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Functionalization; Glassy carbon electrode; Metallorganic complexes; Cyclic voltammetry
Elenco autori:
Martina Sandroni; Giorgio Volpi; Jan Fiedler; Roberto Buscaino; Guido Viscardi; Luciano Milone; Roberto Gobetto; Carlo Nervi
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