A new water-soluble polymer fluorescent chemosensor with thiophene Schiff base site for selectively sensing Al3+ ions
| Autor: | Liping Bai, Amin Chen, Na Li, Liuqi Kong, Xiaoqing Sun, Liping Wang, Wenjie Liu, Farong Tao, Yuhang Xu, Lijuan Cheng, Guang Li |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Detection limit
Schiff base 010405 organic chemistry Chemistry Metal ions in aqueous solution Organic Chemistry Inorganic chemistry 010402 general chemistry 01 natural sciences Biochemistry Fluorescence 0104 chemical sciences Ion chemistry.chemical_compound Drug Discovery Thiophene Water soluble polymers Stoichiometry |
| Zdroj: | Tetrahedron. 79:131888 |
| ISSN: | 0040-4020 |
| DOI: | 10.1016/j.tet.2020.131888 |
| Popis: | A new thiophene Schiff base-based fluorescent “turn-on” chemosensor PEGSB was developed to efficiently detect Al3+ in water. PEGSB exhibited highly selective and sensitive fluorescence response toward Al3+ even in the presence of other competitive metal ions. The detection limit of PEGSB was calculated to be 1.32 × 10−8 M. The binding stoichiometry of PEGSB-Al3+ was found to be 1:1 by Job’s plot analysis. PEGSB showed excellently sensing capability towards Al3+ in a wide pH range from 5 to 9. In addition, PEGSB displayed a better reversibility for Al3+ detection with the aid of EDTA. An INHIBIT logic gate was constructed by using Al3+ and EDTA as input signals and the fluorescence intensity at 444 nm as output signal. Furthermore, test papers containing PEGSB were fabricated for convenient and rapid detection of Al3+ in real water samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect