IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
spontaneous adsorption of 3,5-bis(3,5-dinitrobenzoylamino)benzoic acid onto carbon
Autor/es:
JULIETA PAEZ; MIRIAM STRUMIA; MARIO PASSEGGI; JULIO FERRÓN; ANA BARUZZI; VERÓNICA BRUNETTI
Revista:
ELECTROCHIMICA ACTA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2009 p. 4192 - 4197
ISSN:
0013-4686
Resumen:
Dendritic molecules contain multifunctional groups that can be used to efficiently control the properties
of an electrode surface. We are developing strategies to generate a highly functionalized surface
using multifunctional and rigid dendrons immobilized onto different substrates. In the present work,
we explore the immobilization of a dendritic molecule: 3,5-bis(3,5-dinitrobenzoylamino) benzoic acid
(D-NO2) onto carbon surfaces showing a simple and rapid way to produce conductive surfaces with electroactive
chemical functions. The immobilized D-NO2 layer has been characterized using atomic force
microscopy and cyclic voltammetry. D-NO2 adsorbs onto carbon surfaces spontaneously by dipping the
electrode in dendron solutions. Reduction of this layer generates the hydroxylamine product. The resulting
redox-active layer exhibits a well-behaved redox response for the adsorbed nitroso/hydroxylamine
couple. The film permeability of the derivatized surface has been analyzed employing the electrochemical
response of redox probes: Ru(NH3)6
3+/Ru(NH3)6
2+ and Fe(CN)6
3−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.2) onto carbon surfaces showing a simple and rapid way to produce conductive surfaces with electroactive
chemical functions. The immobilized D-NO2 layer has been characterized using atomic force
microscopy and cyclic voltammetry. D-NO2 adsorbs onto carbon surfaces spontaneously by dipping the
electrode in dendron solutions. Reduction of this layer generates the hydroxylamine product. The resulting
redox-active layer exhibits a well-behaved redox response for the adsorbed nitroso/hydroxylamine
couple. The film permeability of the derivatized surface has been analyzed employing the electrochemical
response of redox probes: Ru(NH3)6
3+/Ru(NH3)6
2+ and Fe(CN)6
3−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.2 layer has been characterized using atomic force
microscopy and cyclic voltammetry. D-NO2 adsorbs onto carbon surfaces spontaneously by dipping the
electrode in dendron solutions. Reduction of this layer generates the hydroxylamine product. The resulting
redox-active layer exhibits a well-behaved redox response for the adsorbed nitroso/hydroxylamine
couple. The film permeability of the derivatized surface has been analyzed employing the electrochemical
response of redox probes: Ru(NH3)6
3+/Ru(NH3)6
2+ and Fe(CN)6
3−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.2 adsorbs onto carbon surfaces spontaneously by dipping the
electrode in dendron solutions. Reduction of this layer generates the hydroxylamine product. The resulting
redox-active layer exhibits a well-behaved redox response for the adsorbed nitroso/hydroxylamine
couple. The film permeability of the derivatized surface has been analyzed employing the electrochemical
response of redox probes: Ru(NH3)6
3+/Ru(NH3)6
2+ and Fe(CN)6
3−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.3)6
3+/Ru(NH3)6
2+ and Fe(CN)6
3−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed./Ru(NH3)6
2+ and Fe(CN)6
3−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.and Fe(CN)6
3−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.−/Fe(CN)6
4−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.−. Electrocatalytic oxidation of
nicotinamide adenine dinucleotide onto a modified carbon surface was also observed.