Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34804
Title: Organic electrochemical transistors with graphene-modified gate electrodes for highly sensitive and selective dopamine sensors
Authors: Liao, C
Zhang, M
Niu, L
Zheng, Z 
Yan, F 
Issue Date: 2014
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry B, 2014, v. 2, no. 2, p. 191-200 How to cite?
Journal: Journal of materials chemistry B
Abstract: Organic electrochemical transistors (OECTs) are successfully used as highly sensitive and selective dopamine sensors. The selectivity of the OECT-based dopamine sensors is significantly improved by coating biocompatible polymer Nafion or chitosan on the surface of the gate electrodes. The interference induced by uric acid and ascorbic acid is effectively eliminated especially after the modification of Nafion. The sensitivity of the devices is improved by graphene flakes co-modified on the gate electrodes. The detection limit of the devices to dopamine is down to 5 nM, which is much lower than that of conventional electrochemical approaches. Because the OECT-based dopamine sensors are solution processable, they are suitable for low-cost and disposable sensing application.
URI: http://hdl.handle.net/10397/34804
ISSN: 2050-7518 (electronic)
DOI: 10.1039/C3TB21079K
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