期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 3, 期 31, 页码 8193-8199出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc00819k
关键词
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资金
- National Natural Science Foundation of China [21471082, 21101095, 21144004, 51173081, 21373114, 61274065]
- National Basic Research Program of China [2012CB933301, 2012CB723402]
- Program for Postgraduates Research Innovation in University of Jiangsu Province [CXZZ13_0466]
- Nanjing University [NY214128]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [YX03001]
- Natural Science Foundation of Jiangsu Province [BM2012010]
- Ministry of Education of China [IRT1148]
- Synergetic Innovation Center for Organic Electronics and Information Displays
Fluorescent polymer nanofibers have wide applications in the fields of nano-photonics, nanooptoelectronics, chemical sensors and light-emitting diodes. The doping of small fluorophores into low-cost polymers is a proven alternative route to produce cost-effective and high-performance optical materials. In order to gain deep insight into the photophysical processes of small molecule-doped polymer nanofiber systems and obtain highly sensitive and cost-effective explosive fluorescent sensors, a new type of highly sensitive low-cost sensor for nitro-compounds was synthesized based on PEO/MePyCz (polyethylene oxide/4-(2-(2-(2-methoxyethoxy) ethoxy) ethoxy)-9-(pyren-1-yl)-9H-carbazole) composite nanofibers. It exhibited fast response and high quenching efficiency towards DNT vapor, which may be attributed to an improved exciton migration of MePyCz in PEO in addition to the large driving force of the electron transfer and the nanofibrous structures. Additionally, it promoted a fluorescence resonance energy transfer process in the polymer fibrous matrix with a green-emitting material of 2-(thiophen-2-yl)-fluoren-9-one. The sensing composite nanofibrous film had good sensitivity and selectivity and might be constructed into a portable detector for explosives.
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