Title | Carbon nanotube/polythiophene chemiresistive sensors for chemical warfare agents. |
Publication Type | Journal Article |
Year of Publication | 2008 |
Authors | Wang, F, Gu, H, Swager, TM |
Journal | Journal of the American Chemical Society |
Volume | 130 |
Pagination | 5392–3 |
Date Published | apr |
ISSN | 1520-5126 |
Keywords | Biosensing Techniques, Biosensing Techniques: methods, Carbon, Carbon: chemistry, Chemical Warfare Agents, Chemical Warfare Agents: analysis, Hydrogen Bonding, Nanotubes, Organophosphorus Compounds, Organophosphorus Compounds: chemistry, Polymers, Polymers: chemistry, Reproducibility of Results, Sensitivity and Specificity, Thiophenes, Thiophenes: chemistry |
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. |
URL | http://www.ncbi.nlm.nih.gov/pubmed/18373343 |
DOI | 10.1021/ja710795k |