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Abstract:

Thiols of short alkyl chain length and different terminal group charge (COO- and NH3 +), and covalently attached ferrocene via terminal NH2 and ferrocene carboxyaldehyde were self assembled on gold electrodes. Electron transfer to Fe(CN)3- 6 in solution and to covalently attached ferrocene centres were studied at different pH by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Changes in solution pH result in variation of the self assembled monolayer (SAM) terminal group charge. The disparate heterogeneous electron transfer apparent rates obtained from Rct have been described on the basis of the Boltzmann surface concentration factor and the potential distribution model of Smith and White and that of Fawcett for the Au-SAM-electrolyte interface. © 1998 Elsevier Science S.A. All rights reserved.

Registro:

Documento: Artículo
Título:Electrostatic interactions at self assembled molecular films of charged thiols on gold
Autor:Molinero, V.; Calvo, E.J.
Filiación:Inquimae, Fac. de Cie. Exactas y Naturales, Ciudad Universitaria, AR-1428, Buenos Aires, Argentina
Palabras clave:Cyclic voltammetry; Electrochemical impedance spectroscopy; Ferrocene; Gold electrodes; Self assembled monolayer; Thiols; Charge transfer; Cyclic voltammetry; Electrolytes; Electrostatics; Gold; Iron compounds; Mathematical models; Monolayers; Organometallics; pH effects; Sulfur compounds; Surface structure; Boltzmann surface concentration factor; Ferrocene; Potential distribution model; Self assembled monolayers; Thiols; Electrochemical electrodes
Año:1998
Volumen:445
Número:1-2
Página de inicio:17
Página de fin:25
DOI: http://dx.doi.org/10.1016/S0022-0728(97)00510-X
Título revista:Journal of Electroanalytical Chemistry
Título revista abreviado:J Electroanal Chem
ISSN:15726657
CODEN:JECHE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v445_n1-2_p17_Molinero

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Citas:

---------- APA ----------
Molinero, V. & Calvo, E.J. (1998) . Electrostatic interactions at self assembled molecular films of charged thiols on gold. Journal of Electroanalytical Chemistry, 445(1-2), 17-25.
http://dx.doi.org/10.1016/S0022-0728(97)00510-X
---------- CHICAGO ----------
Molinero, V., Calvo, E.J. "Electrostatic interactions at self assembled molecular films of charged thiols on gold" . Journal of Electroanalytical Chemistry 445, no. 1-2 (1998) : 17-25.
http://dx.doi.org/10.1016/S0022-0728(97)00510-X
---------- MLA ----------
Molinero, V., Calvo, E.J. "Electrostatic interactions at self assembled molecular films of charged thiols on gold" . Journal of Electroanalytical Chemistry, vol. 445, no. 1-2, 1998, pp. 17-25.
http://dx.doi.org/10.1016/S0022-0728(97)00510-X
---------- VANCOUVER ----------
Molinero, V., Calvo, E.J. Electrostatic interactions at self assembled molecular films of charged thiols on gold. J Electroanal Chem. 1998;445(1-2):17-25.
http://dx.doi.org/10.1016/S0022-0728(97)00510-X