Highly selective and sensitive fluorescent probe for the detection of nitrite
| Autor: | Liyan Huang, Wei Su, Jingjing Liu, Shouzhuo Yao, Xiaoli Duan, Jiali Hu, Haitao Li, Biao Gu |
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| Rok vydání: | 2015 |
| Předmět: |
Models
Molecular Aniline Compounds Time Factors Analytical chemistry Molecular Conformation Infrared spectroscopy 02 engineering and technology 010402 general chemistry 01 natural sciences Analytical Chemistry Electron Transport chemistry.chemical_compound Aniline Limit of Detection Nitrite Nitrites Fluorescent Dyes Detection limit Water Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Highly selective Electron transport chain Fluorescence 0104 chemical sciences Spectrometry Fluorescence chemistry Solvents 0210 nano-technology Food Analysis |
| Zdroj: | Talanta. 152 |
| ISSN: | 1873-3573 |
| Popis: | A simple and reliable fluorescent nitrite (NO2(-)) probe, 2-(1H-phenanthro[9,10-d] imidazol-2-yl)aniline (PA), was rationally developed based on a novel NO2(-)-mediated diazozation and subsequent cyclization. The new sensing mechanism of the probe was confirmed by using NMR, IR spectra, control experiments and DFT calculations. The synthesized probe showed low pH dependence, fast and highly selective fluorescence response to NO2(-) over other species. Under the optimized conditions, the linear response of the probe toward NO2(-) was in the range of 0.1-10 μM with a low detection limit of 4.3×10(-8) M. Moreover, PA was successfully applied for the determination of NO2(-) in environmental samples and food products. |
| Databáze: | OpenAIRE |
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