Thermal desorption of explosives vapour from organic fluorescent sensors

Edward B. Ogugu; Ross N. Gillanders; Graham Turnbull

doi:10.3390/CSAC2021-10559

Thermal desorption of explosives vapour from organic fluorescent sensors

Edward B. Ogugu, Ross N. Gillanders, Graham Turnbull

Research output: Contribution to journal › Article › peer-review

Abstract

Organic semiconductors can be used as highly sensitive fluorescent sensors for the detection of trace-level vapours of nitroaromatic explosives. This involves fluorescence quenching of the sensors and indicates the presence of explosives in the surrounding environment. However, for many organic fluorescent sensors, the quenching of fluorescence is irreversible and imposes a limitation in terms of the reusability of the sensors. Here, we present a study of thermal desorption of 2,4-DNT from thin-film explosives sensors made from the commercial fluorescent polymers Super Yellow and poly(9-vinyl carbazole). Thermal cycling of the sensor results in recovery of fluorescence, thereby making them reusable.

Original language	English
Article number	11
Number of pages	6
Journal	Chemistry Proceedings
Volume	5
Issue number	1
DOIs	https://doi.org/10.3390/CSAC2021-10559
Publication status	Published - 2 Dec 2021
Event	1st International Electronic Conference on Chemical Sensors and Analytical Chemistry - Duration: 1 Jul 2021 → 15 Jul 2021 https://csac2021.sciforum.net/

Keywords

Organic semiconductors
Nitroaromatic explosives
Fluorescence quenching
Thermal desorption

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10.3390/CSAC2021-10559Licence: CC BY

Ogugu_2021_CP_Thermaldesorption_CC
Copyright: © 2021 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 (https:// creativecommons.org/licenses/by/4.0/).
Final published version, 873 KBLicence: CC BY

https://www.mdpi.com/2673-4583/5/1/11Licence: CC BY

Biological Method for Explosive Detect: Biological Method (Bees) for Explosive Detection
Turnbull, G. (PI) & Gillanders, R. (CoI)
3/11/17 → 2/11/20
Project: Standard

Thermal Desorption of Explosives Vapour from Organic Fluorescent Sensors (dataset)
Ogugu, E. B. (Creator), Gillanders, R. (Creator) & Turnbull, G. (Creator), University of St Andrews, 6 Dec 2021
DOI: 10.17630/b573f7de-553f-4ec4-b907-bfdb62584fc9
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title = "Thermal desorption of explosives vapour from organic fluorescent sensors",

abstract = "Organic semiconductors can be used as highly sensitive fluorescent sensors for the detection of trace-level vapours of nitroaromatic explosives. This involves fluorescence quenching of the sensors and indicates the presence of explosives in the surrounding environment. However, for many organic fluorescent sensors, the quenching of fluorescence is irreversible and imposes a limitation in terms of the reusability of the sensors. Here, we present a study of thermal desorption of 2,4-DNT from thin-film explosives sensors made from the commercial fluorescent polymers Super Yellow and poly(9-vinyl carbazole). Thermal cycling of the sensor results in recovery of fluorescence, thereby making them reusable.",

keywords = "Organic semiconductors, Nitroaromatic explosives, Fluorescence quenching, Thermal desorption",

author = "Ogugu, {Edward B.} and Gillanders, {Ross N.} and Graham Turnbull",

note = "Funding: This research was funded by the Commonwealth Scholarships Commision, and the NATO Science for Peace & Security Programme under grant agreement MYP G5355.; 1st International Electronic Conference on Chemical Sensors and Analytical Chemistry, CSAC2021 ; Conference date: 01-07-2021 Through 15-07-2021",

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doi = "10.3390/CSAC2021-10559",

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volume = "5",

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T1 - Thermal desorption of explosives vapour from organic fluorescent sensors

AU - Ogugu, Edward B.

AU - Gillanders, Ross N.

AU - Turnbull, Graham

N1 - Funding: This research was funded by the Commonwealth Scholarships Commision, and the NATO Science for Peace & Security Programme under grant agreement MYP G5355.

PY - 2021/12/2

Y1 - 2021/12/2

N2 - Organic semiconductors can be used as highly sensitive fluorescent sensors for the detection of trace-level vapours of nitroaromatic explosives. This involves fluorescence quenching of the sensors and indicates the presence of explosives in the surrounding environment. However, for many organic fluorescent sensors, the quenching of fluorescence is irreversible and imposes a limitation in terms of the reusability of the sensors. Here, we present a study of thermal desorption of 2,4-DNT from thin-film explosives sensors made from the commercial fluorescent polymers Super Yellow and poly(9-vinyl carbazole). Thermal cycling of the sensor results in recovery of fluorescence, thereby making them reusable.

AB - Organic semiconductors can be used as highly sensitive fluorescent sensors for the detection of trace-level vapours of nitroaromatic explosives. This involves fluorescence quenching of the sensors and indicates the presence of explosives in the surrounding environment. However, for many organic fluorescent sensors, the quenching of fluorescence is irreversible and imposes a limitation in terms of the reusability of the sensors. Here, we present a study of thermal desorption of 2,4-DNT from thin-film explosives sensors made from the commercial fluorescent polymers Super Yellow and poly(9-vinyl carbazole). Thermal cycling of the sensor results in recovery of fluorescence, thereby making them reusable.

KW - Organic semiconductors

KW - Nitroaromatic explosives

KW - Fluorescence quenching

KW - Thermal desorption

U2 - 10.3390/CSAC2021-10559

DO - 10.3390/CSAC2021-10559

M3 - Article

SN - 2673-4583

VL - 5

JO - Chemistry Proceedings

JF - Chemistry Proceedings

IS - 1

M1 - 11

T2 - 1st International Electronic Conference on Chemical Sensors and Analytical Chemistry

Y2 - 1 July 2021 through 15 July 2021

ER -

Thermal desorption of explosives vapour from organic fluorescent sensors

Abstract

Keywords

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Projects

Biological Method for Explosive Detect: Biological Method (Bees) for Explosive Detection

Datasets

Thermal Desorption of Explosives Vapour from Organic Fluorescent Sensors (dataset)

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