Robust Cyclohexanone Selective Chemiresistors Based on Single-Walled Carbon Nanotubes
Author(s)Frazier, Kelvin Mitchell; Swager, Timothy Manning
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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.
DepartmentMassachusetts Institute of Technology. Department of Chemistry
American Chemical Society
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.
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