Carbon Nanotube/Polythiophene Chemiresistive Sensors for Chemical Warfare Agents

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 fiel...

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Bibliographic Details
Published inJournal of the American Chemical Society Vol. 130; no. 16; pp. 5392 - 5393
Main Authors Wang, Fei, Gu, Hongwei, Swager, Timothy M
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 23.04.2008
Subjects
Biosensing Techniques - methods
Chemical Warfare Agents - analysis
Hydrogen Bonding
Nanotubes, Carbon - chemistry
Organophosphorus Compounds - chemistry
Polymers - chemistry
Reproducibility of Results
Sensitivity and Specificity
Thiophenes - chemistry
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Summary: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.
Bibliography:Synthetic procedures, device details, and Raman spectra. This material is available free of charge via the Internet at http://pubs.acs.org.
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content type line 23
ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/ja710795k