16 September 2011 Conjugated polymer sensors for explosive vapor detection
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Abstract
Explosive sensing is a promising, emerging application for conjugated polymers. One exciting potential area of application is to clear landmines left after military actions. In this work, we demonstrate three ways to detect 10 partsper- billion of the model explosive, 1,4-dinitrobenzene (DNB): by monitoring fluorescence intensity, by measuring fluorescence lifetime, and by distributed-feedback (DFB) laser emission. A quenching of the fluorescence is observed upon DNB exposure. The reversibility of the quenching process has been demonstrated by purging with nitrogen.
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Yue Wang, Graham A. Turnbull, Ifor D. W. Samuel, "Conjugated polymer sensors for explosive vapor detection", Proc. SPIE 8118, Organic Semiconductors in Sensors and Bioelectronics IV, 81180E (16 September 2011); doi: 10.1117/12.894413; https://doi.org/10.1117/12.894413
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