Highly selective and sensitive detection of arsenite ions(III) using a novel tetraphenylimidazole-based probe
| Autor: | Yeshuo Ma, Wenbin Zeng, Rong Song, Deling Yin, Anyao Bi, Fei Chen, Shuai Huang, Liu Huang, Xueyan Huang, Bin Feng |
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| Rok vydání: | 2021 |
| Předmět: |
Detection limit
Ions Schiff base Arsenites General Chemical Engineering Inorganic chemistry General Engineering chemistry.chemical_element Fluorescence Analytical Chemistry Ion chemistry.chemical_compound Spectrometry Fluorescence chemistry Humans Chelation Naked eye Arsenic Schiff Bases Arsenite Fluorescent Dyes |
| Zdroj: | Analytical methods : advancing methods and applications. 13(42) |
| ISSN: | 1759-9679 |
| Popis: | More than 200 million people in the world are exposed to areas where the arsenic concentration exceeds the limit allowed for living species, which urges researchers to develop low-cost methods for the selective and fast detection of arsenic ions in environmental samples. Herein, we report a novel tetraphenylimidazole-based probe (TBAB) functionalized with a Schiff base for sensing and detecting arsenic ions in aqueous media. Upon the addition of arsenic ions, an obvious fluorescence change from faint yellow to green was observed visible to the naked eye. The probe can detect arsenic selectively in the presence of interfering substances, with a lower detection limit than 0.7 ppb, a value which is far lower than the limit set by the WHO. A detailed mechanism revealed that the chelation of TBAB with arsenic activated the AIE characteristic, leading to the enhanced fluorescence, which was verified by Job's plot experiment and HRMS. Its practicality was further validated by the analysis of real water samples, demonstrating its potential application for on-site detection and biological application. |
| Databáze: | OpenAIRE |
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