Synthesis, characterization and fluorescence quenching of conjugated polymer containing triphenylamine group |
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| Authors: | Feng LIU Jianhua XIAO Weihua REN Jun HU Honglai LIU |
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| Affiliation: | (1) School of Materials Science and Engineering, Shanghai, 200237, China;(2) State Key Laboratory of Chemical Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai, 200237, China |
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| Abstract: | Poly(triphenylamine-p-phenylenevinylene)s with two different end-groups were obtained through a Wittig polycondensation. The structures of two
copolymers were characterized. Ultraviolet and visible spectroscopy (UV-Vis) and photoluminescence (PL) spectra show the end-capped
polymer emits intensive green light in both solution and film state. Their applications in the detection of nitro compounds
were investigated, and the results show high fluorescence quenching sensitivity of the end-capped polymer towards o-nitrotoluene (o-NT). When the concentration of o-NT was 21.5 × 10−3 mol/L, the fluorescence quenching reached 96%. Additionally, after the exposure of polymer film in three different quenchers
such as dinitrotoluene (DNT), p-nitrobenzoquinone (p-BQ) and p-nitrotoluene (p-NT) for 600 s, its fluorescence quenching reached 93.6%, 11.5% and 77.9%, respectively. This kind of polymer has great advantages
in preparation and may find applications in the detection of nitro explosives.
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Translated from Journal of Functional Polymers, 2008, 21(1): 11–16 译自: 功能高分子学报] |
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| Keywords: | conjugated polymer triphenylamine fluorescence quenching nitro-compound detection |
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