info:eu-repo/semantics/article
Electrochemical scanning tunneling spectroscopy of redox-active molecules bound by Au-C bonds
Fecha
2010-02Registro en:
Ricci, Alejandra Marcela; Calvo, Ernesto Julio; Martin, Santiago; Nichols, Richard J.; Electrochemical scanning tunneling spectroscopy of redox-active molecules bound by Au-C bonds; American Chemical Society; Journal of the American Chemical Society; 132; 8; 2-2010; 2494-2495
0002-7863
CONICET Digital
CONICET
Autor
Ricci, Alejandra Marcela
Calvo, Ernesto Julio
Martin, Santiago
Nichols, Richard J.
Resumen
(Figure Presented) A comparison of the electrochemical gating of molecular conduction by a redox [Os(bipyridine)(pyridine)Cl] complex tethered to Au(111) with two different metal-molecule junctions in a scanning tunneling microscope nanogap is presented. The same redox molecular structure was tethered by mercaptobenzoic acid or reduction of the aryldiazonium salt of p-aminobenzoic acid, resulting in a Au-S or Au-C bond, respectively. A two-step electron-transfer mechanism with vibrational relaxation of the redox molecule is apparent in each case. Copyright © 2009 American Chemical Society.