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Reference type: Journal
Authors: Antwi-Boampong S, Mani KS, Carlan J, BelBruno JJ
Article Title: A selective molecularly imprinted polymer-carbon nanotube sensor for cotinine sensing.
Publication date: 2014
Journal: Journal of Molecular Recognition
Volume: 27
Issue: (1)
Page numbers: 57-63.
DOI: 10.1002/jmr.2331

Abstract: Conductive composite films comprised of single-walled carbon nanotubes coated with molecularly imprinted poly-4-vinylphenol are produced and characterized using ultraviolet and infrared spectroscopies, confirming the successful molecular imprinting of the film with cotinine. The electrical resistance of the imprinted film changes significantly upon binding cotinine, by more than 30 k[Omega], while the unimprinted film in comparison elicits little response. Additionally, once the cotinine template desorbs from the film, the resistance of the imprinted film returns to a value close to the pre-adsorption baseline. Scanning electron microscopy is used to study the morphology of the film compared with the unimprinted control, and gas chromatography quantitatively confirms that the imprinted film selectively detects cotinine while discriminating against the structurally similar alkaloid, nicotine. Copyright 2013 John Wiley & Sons, Ltd
Template and target information: cotinine
Author keywords: molecularly imprinted polymer, conductive sensor, Cotinine, carbon nanotube composite, poly-4-vinylphenol, thin films

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