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Mechanism of 3,4-dihydroxybenzaldehyde electropolymerization at carbon paste electrodes : catalytic detection of NADH

Author(s): Delbem Maria Flávia | Baader Wilhelm Josef | Serrano Sílvia Helena Pires

Journal: Química Nova
ISSN 0100-4042

Volume: 25;
Issue: 5;
Start page: 741;
Date: 2002;
Original page

Keywords: 3 | 4-dihydroxybenzaldehyde | electropolymerization process | chemically modified electrode | cyclic voltammetry | NADH electrocatalytic oxidation

Cyclic voltammetry was used to study 3,4-dihydroxybenzaldehyde (3,4-DHB) electropolymerization processes on carbon paste electrodes. The characteristics of the electropolymerized films were highly dependent on pH, anodic switching potential, scan rate, 3,4-DHB concentrations and number of cycles. Film stability was determined in citrate/phosphate buffer solutions at the same pH used during the electropolymerization process. The best conditions to prepare carbon paste modified electrodes were pH 7.8; 0.0
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