Peer-Reviewed Journal Details
Mandatory Fields
Harley C.;Rooney A.;Breslin C.
2010
October
Sensors and Actuators, B: Chemical
The selective detection of dopamine at a polypyrrole film doped with sulfonated β-cyclodextrins
Published
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Optional Fields
β-Cyclodextrin Ascorbic acid Dopamine sensor Polypyrrole Selective detection
150
2
498
504
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 × 10-6 M for dopamine. © 2010 Elsevier B.V.
0925-4005
10.1016/j.snb.2010.09.012
Grant Details