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Chemiresistive Sensing of Ambient CO(2) by an Autogenously Hydrated Cu(3)(hexaiminobenzene)(2) Framework
[Image: see text] A growing demand for indoor atmosphere monitoring relies critically on the ability to reliably and quantitatively detect carbon dioxide. Widespread adoption of CO(2) sensors requires vastly improved materials and approaches because selective sensing of CO(2) under ambient condition...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6716125/ https://www.ncbi.nlm.nih.gov/pubmed/31482125 http://dx.doi.org/10.1021/acscentsci.9b00482 |
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author | Stassen, Ivo Dou, Jin-Hu Hendon, Christopher Dincă, Mircea |
author_facet | Stassen, Ivo Dou, Jin-Hu Hendon, Christopher Dincă, Mircea |
author_sort | Stassen, Ivo |
collection | PubMed |
description | [Image: see text] A growing demand for indoor atmosphere monitoring relies critically on the ability to reliably and quantitatively detect carbon dioxide. Widespread adoption of CO(2) sensors requires vastly improved materials and approaches because selective sensing of CO(2) under ambient conditions, where relative humidity (RH) and other atmosphere contaminants provide a complex scenario, is particularly challenging. This report describes an ambient CO(2) chemiresistor platform based on nanoporous, electrically conducting two-dimensional metal–organic frameworks (2D MOFs). The CO(2) chemiresistive sensitivity of 2D MOFs is attained through the incorporation of imino-semiquinonate moieties, i.e., well-defined N-heteroatom functionalization. The best performance is obtained with Cu(3)(hexaiminobenzene)(2), Cu(3)HIB(2), which shows selective and robust ambient CO(2) sensing properties at practically relevant levels (400–2500 ppm). The observed ambient CO(2) sensitivity is nearly RH-independent in the range 10–80% RH. Cu(3)HIB(2) shows higher sensitivity over a broader RH range than any other known chemiresistor. Characterization of the CO(2)-MOF interaction through a combination of in situ optical spectroscopy and density functional theory calculations evidence autogenously generated hydrated adsorption sites and a charge trapping mechanism as responsible for the intriguing CO(2) sensing properties of Cu(3)HIB(2). |
format | Online Article Text |
id | pubmed-6716125 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-67161252019-09-03 Chemiresistive Sensing of Ambient CO(2) by an Autogenously Hydrated Cu(3)(hexaiminobenzene)(2) Framework Stassen, Ivo Dou, Jin-Hu Hendon, Christopher Dincă, Mircea ACS Cent Sci [Image: see text] A growing demand for indoor atmosphere monitoring relies critically on the ability to reliably and quantitatively detect carbon dioxide. Widespread adoption of CO(2) sensors requires vastly improved materials and approaches because selective sensing of CO(2) under ambient conditions, where relative humidity (RH) and other atmosphere contaminants provide a complex scenario, is particularly challenging. This report describes an ambient CO(2) chemiresistor platform based on nanoporous, electrically conducting two-dimensional metal–organic frameworks (2D MOFs). The CO(2) chemiresistive sensitivity of 2D MOFs is attained through the incorporation of imino-semiquinonate moieties, i.e., well-defined N-heteroatom functionalization. The best performance is obtained with Cu(3)(hexaiminobenzene)(2), Cu(3)HIB(2), which shows selective and robust ambient CO(2) sensing properties at practically relevant levels (400–2500 ppm). The observed ambient CO(2) sensitivity is nearly RH-independent in the range 10–80% RH. Cu(3)HIB(2) shows higher sensitivity over a broader RH range than any other known chemiresistor. Characterization of the CO(2)-MOF interaction through a combination of in situ optical spectroscopy and density functional theory calculations evidence autogenously generated hydrated adsorption sites and a charge trapping mechanism as responsible for the intriguing CO(2) sensing properties of Cu(3)HIB(2). American Chemical Society 2019-06-27 2019-08-28 /pmc/articles/PMC6716125/ /pubmed/31482125 http://dx.doi.org/10.1021/acscentsci.9b00482 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Stassen, Ivo Dou, Jin-Hu Hendon, Christopher Dincă, Mircea Chemiresistive Sensing of Ambient CO(2) by an Autogenously Hydrated Cu(3)(hexaiminobenzene)(2) Framework |
title | Chemiresistive Sensing of Ambient CO(2) by an Autogenously
Hydrated Cu(3)(hexaiminobenzene)(2) Framework |
title_full | Chemiresistive Sensing of Ambient CO(2) by an Autogenously
Hydrated Cu(3)(hexaiminobenzene)(2) Framework |
title_fullStr | Chemiresistive Sensing of Ambient CO(2) by an Autogenously
Hydrated Cu(3)(hexaiminobenzene)(2) Framework |
title_full_unstemmed | Chemiresistive Sensing of Ambient CO(2) by an Autogenously
Hydrated Cu(3)(hexaiminobenzene)(2) Framework |
title_short | Chemiresistive Sensing of Ambient CO(2) by an Autogenously
Hydrated Cu(3)(hexaiminobenzene)(2) Framework |
title_sort | chemiresistive sensing of ambient co(2) by an autogenously
hydrated cu(3)(hexaiminobenzene)(2) framework |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6716125/ https://www.ncbi.nlm.nih.gov/pubmed/31482125 http://dx.doi.org/10.1021/acscentsci.9b00482 |
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