Chemiresistor Devices for Chemical Warfare Agent Detection Based on Polymer Wrapped Single-Walled Carbon Nanotubes
Name
sensors-17-00982.pdf
Size
2.59 MB
Format
Adobe PDF
Checksum (MD5)
4aca71400c9599d2e45fa244cf410ff3
Author(s)
Hamaguchi, Hitoshi
Fennell, John Francis
Yoon, Bora
Swager, Timothy M
Date Issued
April 2017
Journal
Sensors
Publisher
MDPI AG
Citation
Fennell, John et al. “Chemiresistor Devices for Chemical Warfare Agent Detection Based on Polymer Wrapped Single-Walled Carbon Nanotubes.” Sensors 17, 5 (April 2017): 982 © 2017 The Author(s)
Version
Final published version
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. Keywords: conjugated polymers; chemical warfare agents; carbon nanotubes; chemiresistors; sensors
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.3390/S17050982
