Thermal control of organic semiconductors for trace detection of explosives

Edward B. Ogugu; Ross N. Gillanders; Salam Mohammed; Graham A. Turnbull

doi:10.1039/d3cp02868b

Thermal control of organic semiconductors for trace detection of explosives

Edward B. Ogugu, Ross N. Gillanders, Salam Mohammed, Graham A. Turnbull^*

^*Corresponding author for this work

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

Abstract

Organic semiconductors can be applied as ultra-sensitive fluorescent sensors for detecting trace vapours of explosives. The detection of explosives is manifest by the fluorescence quenching of the sensors. However, for many organic fluorescent sensors, the fluorescence quenching is irreversible and imposes a limitation in terms of reusability. Here we present a study of the thermal control of thin-film fluorescent sensors made from the commercial fluorescent polymer Super Yellow (SY). Thermal control of the sensor's temperature results in the desorption of the absorbed analytes, nitroaromatic explosives (2,4-DNT and DNB), and a taggant molecule (DMDNB). The amount of photoluminescence (PL) quenching and the desorption temperature of analytes provides a route to discriminate between the analytes, and additonally make the SY sensors reusable.

Original language	English
Pages (from-to)	29548-2955
Number of pages	8
Journal	Physical Chemistry Chemical Physics
Volume	25
Issue number	43
Early online date	31 Oct 2023
DOIs	https://doi.org/10.1039/d3cp02868b
Publication status	Published - 21 Nov 2023

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10.1039/d3cp02868bLicence: CC BY

Ogugu_2023_PCCP_Thermalcontrol_CCBY
Copyright © 2023 The Authors. Open Access. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Final published version, 2.25 MBLicence: 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 control of organic semiconductors for trace detection of explosives (dataset)
Ogugu, E. B. (Creator), Gillanders, R. (Creator) & Turnbull, G. (Creator), University of St Andrews, 9 Nov 2023
DOI: 10.17630/603e5964-f6e3-4ab4-b481-f23bb086c2eb
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title = "Thermal control of organic semiconductors for trace detection of explosives",

abstract = "Organic semiconductors can be applied as ultra-sensitive fluorescent sensors for detecting trace vapours of explosives. The detection of explosives is manifest by the fluorescence quenching of the sensors. However, for many organic fluorescent sensors, the fluorescence quenching is irreversible and imposes a limitation in terms of reusability. Here we present a study of the thermal control of thin-film fluorescent sensors made from the commercial fluorescent polymer Super Yellow (SY). Thermal control of the sensor's temperature results in the desorption of the absorbed analytes, nitroaromatic explosives (2,4-DNT and DNB), and a taggant molecule (DMDNB). The amount of photoluminescence (PL) quenching and the desorption temperature of analytes provides a route to discriminate between the analytes, and additonally make the SY sensors reusable.",

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

note = "The authors acknowledge funding from NATO Science for Peace & Security under grant agreement MYP G5355. Edward B. Ogugu acknowledges funding from the Commonwealth Scholarship Commission and the Foreign, Commonwealth and Development Office in the UK.",

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doi = "10.1039/d3cp02868b",

language = "English",

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T1 - Thermal control of organic semiconductors for trace detection of explosives

AU - Ogugu, Edward B.

AU - Gillanders, Ross N.

AU - Mohammed, Salam

AU - Turnbull, Graham A.

N1 - The authors acknowledge funding from NATO Science for Peace & Security under grant agreement MYP G5355. Edward B. Ogugu acknowledges funding from the Commonwealth Scholarship Commission and the Foreign, Commonwealth and Development Office in the UK.

PY - 2023/11/21

Y1 - 2023/11/21

N2 - Organic semiconductors can be applied as ultra-sensitive fluorescent sensors for detecting trace vapours of explosives. The detection of explosives is manifest by the fluorescence quenching of the sensors. However, for many organic fluorescent sensors, the fluorescence quenching is irreversible and imposes a limitation in terms of reusability. Here we present a study of the thermal control of thin-film fluorescent sensors made from the commercial fluorescent polymer Super Yellow (SY). Thermal control of the sensor's temperature results in the desorption of the absorbed analytes, nitroaromatic explosives (2,4-DNT and DNB), and a taggant molecule (DMDNB). The amount of photoluminescence (PL) quenching and the desorption temperature of analytes provides a route to discriminate between the analytes, and additonally make the SY sensors reusable.

AB - Organic semiconductors can be applied as ultra-sensitive fluorescent sensors for detecting trace vapours of explosives. The detection of explosives is manifest by the fluorescence quenching of the sensors. However, for many organic fluorescent sensors, the fluorescence quenching is irreversible and imposes a limitation in terms of reusability. Here we present a study of the thermal control of thin-film fluorescent sensors made from the commercial fluorescent polymer Super Yellow (SY). Thermal control of the sensor's temperature results in the desorption of the absorbed analytes, nitroaromatic explosives (2,4-DNT and DNB), and a taggant molecule (DMDNB). The amount of photoluminescence (PL) quenching and the desorption temperature of analytes provides a route to discriminate between the analytes, and additonally make the SY sensors reusable.

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DO - 10.1039/d3cp02868b

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Thermal control of organic semiconductors for trace detection of explosives

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

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Thermal control of organic semiconductors for trace detection of explosives (dataset)

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