Highly sensitive detection of nitroaromatic explosives using an electrospun nanofibrous sensor based on a novel fluorescent conjugated polymer
| Autor: | Na Li, Jian Pei, Feng Liu, Zhou Peng, Yufei Yang, Huaming Wang, Yuanyuan Long, Guoqing Zhang, Haibo Chen |
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| Rok vydání: | 2012 |
| Předmět: |
chemistry.chemical_classification
Molecular Structure Explosive material Polymers Nanofibers Nanotechnology Picric acid Electrochemical Techniques Polymer Conjugated system Biochemistry Fluorescence Electrospinning Analytical Chemistry chemistry.chemical_compound Microscopy Fluorescence chemistry Chemical engineering Nanofiber Environmental Chemistry Polystyrene Nitrobenzenes Spectroscopy Fluorescent Dyes |
| Zdroj: | Analytica Chimica Acta. 744:82-91 |
| ISSN: | 0003-2670 |
| DOI: | 10.1016/j.aca.2012.07.028 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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