Development of a sensitive and selective fluorescent probe for Zn2+ based on naphthyridine Schiff base
| Autor: | Jing-can Qin, Si-liang Li, Zheng-yin Yang, Long Fan, Chao-rui Li, Guan-qun Wang |
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| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Fluorophore Schiff base Ligand General Chemical Engineering Metal ions in aqueous solution General Physics and Astronomy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Fluorescence 0104 chemical sciences chemistry.chemical_compound chemistry 0210 nano-technology Selectivity |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 375:231-236 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2019.02.024 |
| Popis: | In this study, bearing 4-methyl-7-acetamide-1,8-naphthyridyl group as the fluorophore and the receptor, we designed and synthesized a new-type Schiff-base ligand 1 which was identified as a Zn2+ fluorescent probe. The excellent selectivity and high sensitivity of this as-synthesized fluorescent probe 1 towards Zn2+ over other various biogenic metal ions were observed, for that only Zn2+ induced a drastic enhancement by about 63-fold in intensity of fluorescence emission at 504 nm, and the limit of detection (LOD) could reach 7.52 nM. Moreover, the formation of a 2:1 complex between this probe 1 and Zn2+ was determined, and the perfect invertibility and renewability of this probe 1 for sensing Zn2+ were also demonstrated. As a result, the practical applications of 1 were broadened for sensing and monitoring Zn2+ environmentally and biologically. |
| Databáze: | OpenAIRE |
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