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      A selective molecularly imprinted polymer-carbon nanotube sensor for cotinine sensing.

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          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 kΩ, 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.

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          Author and article information

          Journal
          J. Mol. Recognit.
          Journal of molecular recognition : JMR
          1099-1352
          0952-3499
          Jan 2014
          : 27
          : 1
          Affiliations
          [1 ] Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
          Article
          10.1002/jmr.2331
          24375584
          Copyright © 2013 John Wiley & Sons, Ltd.

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