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Type: Journal article
Title: Explosives detection by fluorescence quenching of conjugated polymers in suspended core optical fibers
Author: Chu, F.
Tsiminis, G.
Spooner, N.
Monro, T.
Citation: Sensors and Actuators B-Chemical, 2014; 199:22-26
Publisher: Elsevier Science SA
Issue Date: 2014
ISSN: 0925-4005
Organisation: Institute for Photonics & Advanced Sensing (IPAS)
Statement of
Fenghong Chu, Georgios Tsiminis, Nigel A. Spooner, Tanya M. Monro
Abstract: In this work we demonstrate a suspended core microstructured optical fiber-based sensor platform forexplosives detection based on the fluorescence quenching of a surface-attached conjugated polymerpoly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV). These fibers allow for strongevanescent field interactions with the surrounding media because of their small core size, and can sam-ple minute liquid volumes. This is the first demonstration of a fluorescent conjugated polymer sensorcapable of measuring liquid explosives samples loaded within an optical fiber. This technique is used toidentify 1,4-dinitrobenzene (DNB), a member of the nitroaromatics family of explosives, in acetone forconcentrations as low as 6.3 ppm in a total sampling volume of 27 nl and to quantify its concentrationusing the fluorescence decay lifetime, requiring an analysis time of only a few minutes.
Keywords: Explosives detection; Fluorescence sensor; Optical fiber sensor
Rights: © 2014 The Authors
RMID: 0020137627
DOI: 10.1016/j.snb.2014.03.031
Appears in Collections:IPAS publications

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