dc.contributor.author | Fong, Darryl K | |
dc.contributor.author | Luo, Shao-Xiong | |
dc.contributor.author | Andre, Rafaela S. | |
dc.contributor.author | Swager, Timothy M | |
dc.date.accessioned | 2020-10-27T20:55:59Z | |
dc.date.available | 2020-10-27T20:55:59Z | |
dc.date.issued | 2020-03 | |
dc.date.submitted | 2020-01 | |
dc.identifier.issn | 2374-7943 | |
dc.identifier.issn | 2374-7951 | |
dc.identifier.uri | https://hdl.handle.net/1721.1/128218 | |
dc.description.abstract | Ethylene 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.sponsorship | U.S. Army Engineer Research and Development Center Environmental Quality Technology Program (Contract W912HZ-17-2-0027) | en_US |
dc.description.sponsorship | National Science Foundation (Grant DMR-1809740) | en_US |
dc.language.iso | en | |
dc.publisher | American Chemical Society (ACS) | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1021/acscentsci.0c00022 | en_US |
dc.rights | 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. | en_US |
dc.source | ACS | en_US |
dc.title | Trace Ethylene Sensing via Wacker Oxidation | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Fong, Darryl K. et al. "Trace Ethylene Sensing via Wacker Oxidation." ACS Central Science 6, 4 (March 2020): 507–512 © 2020 American Chemical Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Chemistry | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies | en_US |
dc.relation.journal | ACS Central Science | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dc.date.updated | 2020-09-22T15:31:45Z | |
dspace.date.submission | 2020-09-22T15:31:47Z | |
mit.journal.volume | 6 | en_US |
mit.journal.issue | 4 | en_US |
mit.license | PUBLISHER_POLICY | |
mit.metadata.status | Complete | |