|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|
|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|
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.