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Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots

The multichannel fluorescent sensor array based on nanofibrous membranes loaded with ZnS quantum dots (QDs) was created and demonstrated for the discriminative detection of explosives. The synergistic effect of the high surface-to-volume ratio of QDs, the good permeability of nanofibrous membranes a...

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Autores principales: Wu, Zhaofeng, Duan, Haiming, Li, Zhijun, Guo, Jixi, Zhong, Furu, Cao, Yali, Jia, Dianzeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5713073/
https://www.ncbi.nlm.nih.gov/pubmed/29156627
http://dx.doi.org/10.3390/s17112676
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author Wu, Zhaofeng
Duan, Haiming
Li, Zhijun
Guo, Jixi
Zhong, Furu
Cao, Yali
Jia, Dianzeng
author_facet Wu, Zhaofeng
Duan, Haiming
Li, Zhijun
Guo, Jixi
Zhong, Furu
Cao, Yali
Jia, Dianzeng
author_sort Wu, Zhaofeng
collection PubMed
description The multichannel fluorescent sensor array based on nanofibrous membranes loaded with ZnS quantum dots (QDs) was created and demonstrated for the discriminative detection of explosives. The synergistic effect of the high surface-to-volume ratio of QDs, the good permeability of nanofibrous membranes and the differential response introduced by surface ligands was played by constructing the sensing array using nanofibrous membranes loaded with ZnS QDs featuring several surface ligands. Interestingly, although the fluorescence quenching of the nanofibrous membranes is not linearly related to the exposure time, the fingerprint of each explosive at different times is very similar in shape, and the fingerprints of the three explosives show different shapes. Three saturated vapors of nitroaromatic explosives could be reliably detected and discriminated by the array at room temperature. This work is the first step toward devising a monitoring system for explosives in the field of public security and defense. It could, for example, be coupled with the technology of image recognition and large data analysis for a rapid diagnostic test of explosives. This work further highlights the power of differential, multichannel arrays for the rapid and discriminative detection of a wide range of chemicals.
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spelling pubmed-57130732017-12-07 Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots Wu, Zhaofeng Duan, Haiming Li, Zhijun Guo, Jixi Zhong, Furu Cao, Yali Jia, Dianzeng Sensors (Basel) Article The multichannel fluorescent sensor array based on nanofibrous membranes loaded with ZnS quantum dots (QDs) was created and demonstrated for the discriminative detection of explosives. The synergistic effect of the high surface-to-volume ratio of QDs, the good permeability of nanofibrous membranes and the differential response introduced by surface ligands was played by constructing the sensing array using nanofibrous membranes loaded with ZnS QDs featuring several surface ligands. Interestingly, although the fluorescence quenching of the nanofibrous membranes is not linearly related to the exposure time, the fingerprint of each explosive at different times is very similar in shape, and the fingerprints of the three explosives show different shapes. Three saturated vapors of nitroaromatic explosives could be reliably detected and discriminated by the array at room temperature. This work is the first step toward devising a monitoring system for explosives in the field of public security and defense. It could, for example, be coupled with the technology of image recognition and large data analysis for a rapid diagnostic test of explosives. This work further highlights the power of differential, multichannel arrays for the rapid and discriminative detection of a wide range of chemicals. MDPI 2017-11-20 /pmc/articles/PMC5713073/ /pubmed/29156627 http://dx.doi.org/10.3390/s17112676 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wu, Zhaofeng
Duan, Haiming
Li, Zhijun
Guo, Jixi
Zhong, Furu
Cao, Yali
Jia, Dianzeng
Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots
title Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots
title_full Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots
title_fullStr Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots
title_full_unstemmed Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots
title_short Multichannel Discriminative Detection of Explosive Vapors with an Array of Nanofibrous Membranes Loaded with Quantum Dots
title_sort multichannel discriminative detection of explosive vapors with an array of nanofibrous membranes loaded with quantum dots
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5713073/
https://www.ncbi.nlm.nih.gov/pubmed/29156627
http://dx.doi.org/10.3390/s17112676
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