Electrochemistry of Os(2,2′-bpy)2ClPyCH2NHCOPh tethered to Au electrodes by S-Au and C-Au junctions

Osmium pyridine-bipyridine redox centers have been tethered to Au electrodes by chemical modification through Au-S and Au-C bonds respectively. 4-mercapto benzoic acid and the reduction product of the aryl diazonium salt of 4-amino benzoic acid were reacted on Au surfaces, with further post-function...

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Detalles Bibliográficos
Autores principales: Ricci, A.M., Tognalli, N., De La Llave, E., Vericat, C., Méndez De Leo, L.P., Williams, F.J., Scherlis, D., Salvarezza, R., Calvo, E.J.
Formato: JOUR
Materias:
4 aminobenzoic acid
gold
osmium
pyridine
pyridine derivative
article
chemical structure
chemistry
electrochemistry
electrode
oxidation reduction reaction
Raman spectrometry
scanning tunneling microscopy
surface property
X ray photoelectron spectroscopy
4-Aminobenzoic Acid
Electrochemistry
Electrodes
Gold
Microscopy, Scanning Tunneling
Molecular Structure
Osmium
Oxidation-Reduction
Photoelectron Spectroscopy
Pyridines
Spectrum Analysis, Raman
Surface Properties
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14639076_v13_n12_p5336_Ricci
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Osmium pyridine-bipyridine redox centers have been tethered to Au electrodes by chemical modification through Au-S and Au-C bonds respectively. 4-mercapto benzoic acid and the reduction product of the aryl diazonium salt of 4-amino benzoic acid were reacted on Au surfaces, with further post-functionalization by chemical reaction of the osmium complex amino-pyridine derivative with the surface carboxylates. The resulting modified Au surfaces were characterized by polarization modulated infrared reflection absorption spectroscopy (PM-IRRAS), scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), resonant raman spectroscopy and cyclic voltammetry. © the Owner Societies.

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