title: Electrochemical scanning tunneling spectroscopy of redox-active molecules bound by Au-C bonds.
abstract: 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.
authors: INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires CP 1428, Argentina.
authors: Alejandra M
authors: AM
authors: Ricci
authors: Ernesto J
authors: EJ
authors: Calvo
authors: Santiago
authors: S
authors: Martin
authors: Richard J
authors: RJ
authors: Nichols