An Organocobalt–Carbon Nanotube Chemiresistive Carbon Monoxide Detector
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Swager_An Organocobalt-Carbon.pdf
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Author(s)
Liu, Sophie F.
Lin, Sibo
Swager, Timothy M.
Liu, Sophie
Swager, Timothy M
Date Issued
March 2016
Journal
ACS Sensors
Publisher
American Chemical Society (ACS)
Citation
Liu, Sophie F.; Lin, Sibo and Swager, Timothy M. “An Organocobalt–Carbon Nanotube Chemiresistive Carbon Monoxide Detector.” ACS Sensors 1, no. 4 (April 2016): 354–357. © 2016 American Chemical Society
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Author's final manuscript
Abstract
A chemiresistive detector for carbon monoxide was created from single-walled carbon nanotubes (SWCNTs) by noncovalent modification with diiodo(η⁵:η¹-1-[2-(N,N-dimethylamino)ethyl]-2,3,4,5-tetramethylcyclopentadienyl)-cobalt(III) ([Cp[superscript ∧]CoI₂]), an organocobalt complex with an intramolecular amino ligand coordinated to the metal center that is displaced upon CO binding. The unbound amino group can subsequently be transduced chemiresistively by the SWCNT network. The resulting device was shown to have a ppm-level limit of detection and unprecedented selectivity for CO gas among CNT-based chemiresistors. This work, the first molecular-level mechanistic elucidation for a CNT-based chemiresistive detector for CO, demonstrates the efficacy of using an analyte’s reactivity to produce another chemical moiety that is readily transduced as a strategy for the rational design of chemiresistive CNT-based detectors.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1021/acssensors.6b00005
