Interpenetrated Binary Supramolecular Nanofibers for Sensitive Fluorescence Detection of Six Classes of Explosives
| Autor: | Yanke Che, Chen Wang, Wei Xiong, Yanjun Gong, Jincai Zhao, Qijian Zhu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Explosive material
Carbazole Supramolecular chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Oligomer Peroxide Fluorescence 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Nanofiber Excited state 0210 nano-technology |
| Zdroj: | Analytical Chemistry. 90:4273-4276 |
| ISSN: | 1520-6882 0003-2700 |
| Popis: | In this work, we develop a sequential self-assembly approach to fabricate interpenetrated binary supramolecular nanofibers consisting of carbazole oligomer 1-cobalt(II) (1-Co2+) coordination nanofibers and oligomer 2 nanofibers for the sensitive detection of six classes of explosives. When exposed to peroxide explosives (e.g., H2O2), Co2+ in 1-Co2+ coordination nanofibers can be reduced to Co+ that can transfer an electron to the excited 2 nanofibers and thereby quench their fluorescence. On the other hand, when exposed to the other five classes of explosives, the excited 2 nanofibers can transfer an electron to explosives to quench their fluorescence. On the basis of the distinct fluorescence quenching mechanisms, six classes of explosives can be sensitively detected. Herein, we provide a new strategy to design broad-band fluorescence sensors for a rich identification of threats. |
| Databáze: | OpenAIRE |
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