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Title: Detection of bisphenol a using DNA-functionalized graphene field effect transistors integrated in microfluidic systems
Authors: Liu, SH 
Fu, Y 
Xiong, C
Liu, ZK 
Zheng, L
Yan, F 
Keywords: Solution-gated graphene transistor
Bisphenol A detection
DNA aptamer
Issue Date: 2018
Publisher: American Chemical Society
Source: ACS applied materials and interfaces, 18 July 2018, v. 10, no. 28, p. 23522-23528 How to cite?
Journal: ACS applied materials and interfaces 
Abstract: Bisphenol A (BPA) detection has attracted much attention recently for its importance to food safety and environment. The DNA-functionalized solution-gated graphene transistors are integrated in microfluidic systems and used for recycling detections of BPA for the first time. In the presence of BPA, both single- and double stranded DNA molecules are detached and released from the graphene surface in aqueous solutions, leading to the change of device electrical performance. The channel currents of the devices change monotonically with the concentration of BPA. Moreover, the devices modified with double-stranded DNA are more sensitive to BPA and show the detection limit down to 10 ng/mL. The highly sensitive label-free BPA sensors are expected to be used for convenient BPA detections in many applications.
ISSN: 1944-8244
EISSN: 1944-8252
DOI: 10.1021/acsami.8b04260
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