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Reference type: Journal
Authors: Halim NFAB, Musa NH, Zakaria Z, Von Schleusingen M, Ahmad MN, Derman N, Shakaff AYM
Article Title: Reduced graphene oxide/molecular imprinted polymer-organic thin film transistor for amino acid detection.
Publication date: 2017
Journal: AIP Conference Proceedings
Volume: 1808
Issue: (1)
Page numbers: ArticleNo020019.
DOI: 10.1063/1.4975252
Alternative URL: http://aip.scitation.org/doi/abs/10.1063/1.4975252

Abstract: This works reports the electrical performance of reduced graphene oxide (RGO)/Molecular imprinted polymer (MIP)- organic thin film transistor (OTFT) for amino-acid detection, serine. These biomimetic sensors consider MIP as man-tailored biomimetic recognition sites that play an important role in signal transduction. MIP provides recognition sites compatible with serine molecules was developed by dispersing serine with methylacrylate acid (MAA) as functional monomer and Ethylene glycol dimethylacrylate (EGDMA) as cross-linker. The imprinted polymeric were mixed with reduced graphene oxide to produced sensing layer for the sensor. RGO-MIP layer was introduced between source and drain of OTFT via spin coating as a detecting layer for serine molecules. RGO was introduced into MIP, to allow a highly conductive sensing material thus enhanced selectivity and sensitivity of the sensor. By analyzing the electrical performance of the sensors, the performances of OTFT sensor enhanced with RGO/MIP interlayer and OTFT sensor with MIP interlayer when exposed to serine analyte were obtained. The results showed that there were remarkable shifts of drain current (ID) obtained from OTFT sensor with RGO/MIP interlayer after exposed to serine analyte. Moreover, the sensitivity of OTFT sensor with RGO/MIP interlayer was nearly higher than the OTFT sensor with MIP interlayer. Hence, it proved that RGO successfully enhanced the sensing performance of OTFT sensor
Template and target information: serine


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