A highly selective potentiometric amphetamine microsensor based on all-solid-state membrane using a new ion-pair complex, [3,3′-Co(1,2-closo-C2B9H11)2]− [C9H13NH]

In the present work a high-performance ion-selective microelectrode for the detection of amphetamine is presented. For this purpose, a novel ion-pair complex based on the metallocarborane, cobalt bis(dicarbollide) anion ([3,3′-Co(1,2-C2B9H11)2]−) coupled to amphetamine-protonated cation has been pre...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2018-08, Vol.266, p.823-829
Main Authors: Gallardo-Gonzalez, J., Saini, A., Baraket, A., Boudjaoui, S., Alcácer, A., Streklas, A., Teixidor, F., Zine, N., Bausells, J., Errachid, A.
Format: Article
Language:English
Subjects:
Amphetamine
Analytical chemistry
Biotechnology
Chemical Sciences
Chemical sensors
Ion-pair complex
Life Sciences
Material chemistry
Metallocarboranes
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Summary:In the present work a high-performance ion-selective microelectrode for the detection of amphetamine is presented. For this purpose, a novel ion-pair complex based on the metallocarborane, cobalt bis(dicarbollide) anion ([3,3′-Co(1,2-C2B9H11)2]−) coupled to amphetamine-protonated cation has been prepared as the active site for amphetamine recognition. The prepared ion-pair complex was incorporated to a PVC-type sensitive membrane. It was then drop-cast on the top of a gold microelectrode previously modified with a solid contact layer of polypyrrole. This novel amphetamine microsensor has provided excellent and quick response within the range 10−5 M to 10−3 M of amphetamine concentration, a limit of detection of 12 μM and a slope of 60.1 mV/decade. It was also found to be highly selective towards amphetamine when compared to some potential interference compounds. In addition, Reilley diagram shows that the sensor signal is stable for a working pH interval between 1.50 and 8.50.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2018.04.001