Robust Cyclohexanone Selective Chemiresistors Based on Single-Walled Carbon Nanotubes
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7.67 MB
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Adobe PDF
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Author(s)
Frazier, Kelvin Mitchell
Swager, Timothy Manning
Date Issued
August 2013
Journal
Analytical Chemistry
Publisher
American Chemical Society
Citation
Frazier, Kelvin M., and Timothy M. Swager. “Robust Cyclohexanone Selective Chemiresistors Based on Single-Walled Carbon Nanotubes.” Analytical Chemistry 85, no. 15 (August 6, 2013): 7154–7158.
Version
Author's final manuscript
Abstract
Functionalized single-walled carbon nanotube (SWCNT)-based chemiresistors are reported for a highly robust and sensitive gas sensor to selectively detect cyclohexanone, a target analyte for explosive detection. The trifunctional selector has three important properties: it noncovalently functionalizes SWCNTs with cofacial π–π interactions, it binds to cyclohexanone via hydrogen bond (mechanistic studies were investigated), and it improves the overall robustness of SWCNT-based chemiresistors (e.g., humidity and heat). Our sensors produced reversible and reproducible responses in less than 30 s to 10 ppm of cyclohexanone and displayed an average theoretical limit of detection (LOD) of 5 ppm.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1021/ac400808h
