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dc.contributor.authorFong, Darryl K
dc.contributor.authorLuo, Shao-Xiong
dc.contributor.authorAndre, Rafaela S.
dc.contributor.authorSwager, Timothy M
dc.date.accessioned2020-10-27T20:55:59Z
dc.date.available2020-10-27T20:55:59Z
dc.date.issued2020-03
dc.date.submitted2020-01
dc.identifier.issn2374-7943
dc.identifier.issn2374-7951
dc.identifier.urihttps://hdl.handle.net/1721.1/128218
dc.description.abstractEthylene is a dynamic plant hormone, and its temporal monitoring can be used to glean insight into plant health and status. However, the real-time distributed detection of ethylene at trace levels under ambient conditions remains a challenge. We report a single-walled carbon nanotube-based chemiresistor catalyst combination that can detect ppb levels of ethylene in air. Cycling between Pd(II) and Pd(0) via Wacker oxidation with a nitrite cocatalyst imparts response discrimination driven by the chemoselectivity of the chemical transformation. Sensitivity is controlled by a combination of the chemical reaction efficiency and the n-doping strength of the Pd(0) species generated in situ. The covalent functionalization of the carbon nanotube sidewall with pyridyl ligands drastically improves the device sensitivity via enhanced n-doping. The utility of this ethylene sensor is demonstrated in the monitoring of senescence in red carnations and purple lisianthus flowers.en_US
dc.description.sponsorshipU.S. Army Engineer Research and Development Center Environmental Quality Technology Program (Contract W912HZ-17-2-0027)en_US
dc.description.sponsorshipNational Science Foundation (Grant DMR-1809740)en_US
dc.language.isoen
dc.publisherAmerican Chemical Society (ACS)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/acscentsci.0c00022en_US
dc.rightsArticle 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.en_US
dc.sourceACSen_US
dc.titleTrace Ethylene Sensing via Wacker Oxidationen_US
dc.typeArticleen_US
dc.identifier.citationFong, Darryl K. et al. "Trace Ethylene Sensing via Wacker Oxidation." ACS Central Science 6, 4 (March 2020): 507–512 © 2020 American Chemical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemistryen_US
dc.contributor.departmentMassachusetts Institute of Technology. Institute for Soldier Nanotechnologiesen_US
dc.relation.journalACS Central Scienceen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2020-09-22T15:31:45Z
dspace.date.submission2020-09-22T15:31:47Z
mit.journal.volume6en_US
mit.journal.issue4en_US
mit.licensePUBLISHER_POLICY


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