期刊
ANALYTICA CHIMICA ACTA
卷 744, 期 -, 页码 82-91出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2012.07.028
关键词
Fluorescent sensor; Electrospinning; Nanofibers; Conjugated polymer; Nitroaromatic explosive; Detection
资金
- National Natural Science Foundation of China [20975006, 21035005, 20675003]
An electrospun nanofibrous explosive sensor was first constructed based on a newly developed fluorescent conjugated polymer P containing heteroatom polycyclic units. Electrospinning by doping polymer P as a fluorescent probe in a polystyrene supporting matrix afforded a fluorescence nanofibrous film with unique porous structures, and effectively avoided the aggregation of polymer P. The novel explosive sensor exhibited stable fluorescence property, satisfactory reversibility with less than 5% loss of signal intensity after four quenching-regeneration cycles, and good reproducibility among three batches with a relative standard deviation of 2.8%. Such fabricated sensor also showed remarkable sensitivity toward a series of trace nitroaromatic explosive vapors, including picric acid (parts-per-trillion level) and 2,4,6-trinitrotoluene vapor (parts-per-billion level), as well as good selectivity with less than 10% response to typical interferents. Therefore, the present strategy extends the application of different kinds of conjugated polymers for the construction of optical chemosensors. (c) 2012 Elsevier B.V. All rights reserved.
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