Meijuan ZHANG, Huiwen FANG, Yujiao WEI, Jinhong YANG, Weihua WANG, Shengnan HE. Detection of trinitrotoluene based on fluorescence quenching sensor technology[J]. Chinese Journal of Quantum Electronics, 2024, 41(1): 37
- Chinese Journal of Quantum Electronics
- Vol. 41, Issue 1, 37 (2024)
Fig. 1. Normalized UV-visible absorption spectrum and photoluminescence spectrum
Fig. 2. Physical diagram of experimental device
Fig. 3. Schematic diagram of conjugated polymer fluorescence quenching sensing experiment method
Fig. 4. Fluorescence intensity of FGEP film with different concentration changes with time. (a) 0.25 mg/mL; (b) 0.5 mg/mL;(c) 1 mg/mL; (d) 2 mg/mL; (e) 5 mg/mL; (f) 10 mg/mL
Fig. 5. Reversible fluorescence sensing curve of 0.5 mg/mL FGEP film for TNT
Fig. 6. Quenching efficiency curves of FGEP spin coating film for TNT detection under different laser intensity
Fig. 7. Self-quenching of FGEP film under different laser intensity. (a) Self-quenching efficiency curve; (b) Film sample life curve
Fig. 8. Comparison of quenching efficiency of three quenching processes
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Table 1. Quenching efficiency of FGEP sample films with different concentration and thicknesswhen exposed to saturated TNT vapor for 360 s
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