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The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins

Harley, Claire C. and Rooney, A. Denise and Breslin, Carmel B. (2010) The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins. Sensors and Actuators B: Chemical, 150 (2). pp. 498-504. ISSN 0925-4005

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Abstract

A highly selective dopamine sensor was fabricated by doping polypyrrole with a sulfonated β-cyclodextrin. This composite material enabled the selective sensing of dopamine in the presence of a large excess of ascorbic acid and prevented the regeneration of dopamine through the homogeneous catalytic reaction of the ascorbate anion with the dopamine-o-quinone. A single redox wave, corresponding to the oxidation of dopamine, was observed in dopamine/ascorbate mixtures, giving a truly selective dopamine sensor. The limit of detection was measured as 3.2×10−6M for dopamine

Item Type: Article
Additional Information: The definitive version of this article is available at Sensors and Actuators B: Chemical (2010) Vol.150 No.2 pp.498-504. doi:10.1016/j.snb.2010.09.012
Keywords: Dopamine sensor; Polypyrrole; β-Cyclodextrin; Ascorbic acid; Selective detection;
Subjects: Science & Engineering > Chemistry
Item ID: 3828
Depositing User: Dr. Carmel Breslin
Date Deposited: 22 Aug 2012 15:41
Journal or Publication Title: Sensors and Actuators B: Chemical
Publisher: Elsevier
Refereed: Yes
URI:

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