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J Am Chem Soc. 2008 Apr 23;130(16):5392-3. doi: 10.1021/ja710795k. Epub 2008 Mar 29.

Carbon nanotube/polythiophene chemiresistive sensors for chemical warfare agents.

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1
Department of Materials Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Abstract

We report a chemiresistor that has been fabricated via simple spin-casting technique from stable CNT dispersion in hexafluoroisopropanol functionalized polythiophene. The sensor has shown high sensitivity and selectivity for a nerve reagent stimulant DMMP. A series of sensing studies, including field effect investigation, electrode passivation, and fluorescent measurement, indicate a combinative mechanism of charge transfer, introduction of scattering sites, and a configurational change of the polymer.

PMID:
18373343
DOI:
10.1021/ja710795k
[Indexed for MEDLINE]
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