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Sensors 2017, 17(5), 982; doi:10.3390/s17050982

Chemiresistor Devices for Chemical Warfare Agent Detection Based on Polymer Wrapped Single-Walled Carbon Nanotubes

1
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
2
Japanese Synthetic Rubber Company, Tokyo 105-8640, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Franz L. Dickert
Received: 3 February 2017 / Revised: 20 March 2017 / Accepted: 26 April 2017 / Published: 28 April 2017
(This article belongs to the Special Issue Chemiresistive Sensors: Status and the Future)
View Full-Text   |   Download PDF [2657 KB, uploaded 28 April 2017]   |  

Abstract

Chemical warfare agents (CWA) continue to present a threat to civilian populations and military personnel in operational areas all over the world. Reliable measurements of CWAs are critical to contamination detection, avoidance, and remediation. The current deployed systems in United States and foreign militaries, as well as those in the private sector offer accurate detection of CWAs, but are still limited by size, portability and fabrication cost. Herein, we report a chemiresistive CWA sensor using single-walled carbon nanotubes (SWCNTs) wrapped with poly(3,4-ethylenedioxythiophene) (PEDOT) derivatives. We demonstrate that a pendant hexafluoroisopropanol group on the polymer that enhances sensitivity to a nerve agent mimic, dimethyl methylphosphonate, in both nitrogen and air environments to concentrations as low as 5 ppm and 11 ppm, respectively. Additionally, these PEDOT/SWCNT derivative sensor systems experience negligible device performance over the course of two weeks under ambient conditions. View Full-Text
Keywords: conjugated polymers; chemical warfare agents; carbon nanotubes; chemiresistors; sensors conjugated polymers; chemical warfare agents; carbon nanotubes; chemiresistors; sensors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Fennell, J.F.; Hamaguchi, H.; Yoon, B.; Swager, T.M. Chemiresistor Devices for Chemical Warfare Agent Detection Based on Polymer Wrapped Single-Walled Carbon Nanotubes. Sensors 2017, 17, 982.

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