INVESTIGADORES
CALVO Ernesto Julio
artículos
Título:
Electron transfer at Au surfaces modified by Tethered Osmium bipyridinepyridine complexes
Autor/es:
RICCI, ALEJANDRA; ROLLI, CLAUDIO; ROTHACHER, SILVINA; BARALDO, LUIS; BONAZZOLA, CECILIA; CALVO, ERNESTO JULIO; TOGNALLI, NICOLAS; FAINSTEIN, ALEX
Revista:
JOURNAL OF SOLID STATE ELECTROCHEMISTRY (PRINT)
Editorial:
Springer
Referencias:
Año: 2007
ISSN:
1432-8488
Resumen:
Chemically modified electrodes by the osmium
complex OsðbpyÞ2Clpy X þPF6 tethered to Au surfaces
by (1) reaction of cysteamine with the aldehyde (X=CHO),
(2) mercapto alkanoic acid reaction with amine [X=
(CH2)2NH2], and (3) reduction of the diazonium salt of paminobenzoic
acid and further amidation reaction with the
amine derivative of the osmium complex [X=(CH2)2NH2]
were performed to explore the electron transfer properties
of these redox-modified surfaces. The modified Au surfaces
were characterized by infrared reflection absorption spectroscopy
and resonant Raman spectroscopy. Cyclic voltammetry
was used to study the electrochemical properties of the
osmium complexes covalently attached to the surface as a
function of the type and length of the tether.ðbpyÞ2Clpy X þPF6 tethered to Au surfaces
by (1) reaction of cysteamine with the aldehyde (X=CHO),
(2) mercapto alkanoic acid reaction with amine [X=
(CH2)2NH2], and (3) reduction of the diazonium salt of paminobenzoic
acid and further amidation reaction with the
amine derivative of the osmium complex [X=(CH2)2NH2]
were performed to explore the electron transfer properties
of these redox-modified surfaces. The modified Au surfaces
were characterized by infrared reflection absorption spectroscopy
and resonant Raman spectroscopy. Cyclic voltammetry
was used to study the electrochemical properties of the
osmium complexes covalently attached to the surface as a
function of the type and length of the tether.X=CHO),
(2) mercapto alkanoic acid reaction with amine [X=
(CH2)2NH2], and (3) reduction of the diazonium salt of paminobenzoic
acid and further amidation reaction with the
amine derivative of the osmium complex [X=(CH2)2NH2]
were performed to explore the electron transfer properties
of these redox-modified surfaces. The modified Au surfaces
were characterized by infrared reflection absorption spectroscopy
and resonant Raman spectroscopy. Cyclic voltammetry
was used to study the electrochemical properties of the
osmium complexes covalently attached to the surface as a
function of the type and length of the tether.X=
(CH2)2NH2], and (3) reduction of the diazonium salt of paminobenzoic
acid and further amidation reaction with the
amine derivative of the osmium complex [X=(CH2)2NH2]
were performed to explore the electron transfer properties
of these redox-modified surfaces. The modified Au surfaces
were characterized by infrared reflection absorption spectroscopy
and resonant Raman spectroscopy. Cyclic voltammetry
was used to study the electrochemical properties of the
osmium complexes covalently attached to the surface as a
function of the type and length of the tether.2)2NH2], and (3) reduction of the diazonium salt of paminobenzoic
acid and further amidation reaction with the
amine derivative of the osmium complex [X=(CH2)2NH2]
were performed to explore the electron transfer properties
of these redox-modified surfaces. The modified Au surfaces
were characterized by infrared reflection absorption spectroscopy
and resonant Raman spectroscopy. Cyclic voltammetry
was used to study the electrochemical properties of the
osmium complexes covalently attached to the surface as a
function of the type and length of the tether.X=(CH2)2NH2]
were performed to explore the electron transfer properties
of these redox-modified surfaces. The modified Au surfaces
were characterized by infrared reflection absorption spectroscopy
and resonant Raman spectroscopy. Cyclic voltammetry
was used to study the electrochemical properties of the
osmium complexes covalently attached to the surface as a
function of the type and length of the tether.
