INVESTIGADORES
GONZALEZ graciela alicia
artículos
Título:
Disposable gold electrode array for simultaneous electrochemical studies
Autor/es:
GRACIELA PRIANO, GRACIELA GONZÁLEZ, MAURICIO GÜNTHER, FERNANDO BATTAGLINI
Revista:
ELECTROANALYSIS
Editorial:
WILEY-VCH
Referencias:
Año: 2008 vol. 20 p. 91 - 97
ISSN:
1040-0397
Resumen:
An efficient and inexpensive eight gold electrode array has been manufactured by a combination of screen printing
and gold electrodeposition techniques. Gold electrodeposition was performed in potentiostatic and galvanostatic
conditions. Different treatments, involving temperature and polishing control, led to electrodes with different
roughness. The electrochemical behavior of the generated gold surface was studied by cyclic voltammetry showing the
characteristic response of polycrystalline gold, in contrast with disposable gold electrodes fabricated by screen
printing from gold inks. The electrodes were chemically modified through the adsorption of alkanethiols selfassembled
monolayers and the coupling of a model protein. Both reactions were followed by cyclic voltammetry and
Electrochemical Impedance Spectroscopy (EIS). The electrodes have shown high reproducibility in their electrochemical
behavior as well as in their modifications.