期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 392, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2020.112427
关键词
Coumarin; Sequential recognition; Sensor; Al3+; PPi
资金
- Science Foundation of North University of China [110121]
In this study, a novel schiff base fluorescent probe (E)-N'-(3-(benzo[d]thiazol-2-yl)-2-hydroxy-5-methylbenzylidene)-7-(diethylamino)-2-oxo-2H-chromene-3-carbohydrazide (CHS) was synthesized for sequential detection of Al3+ and pyrophosphate ions (PPi) in a DMSO/HEPES (4:1 v/v, pH = 7.4) buffer system and characterized by H-1 NMR, C-13 NMR, ESI-HR-MS and DFT calculation. Its detection limit was determined to be 0.16 mu M for Al3+ and 0.18 mu M for PPi in a pH range of 4 similar to 8, respectively. The Job' s plot showed that the stoichiometric ratio to Al3+ was 1:1, and CHS-Al3+ showed highly selective recognition of PPi. The sensor CHS could also recognize Al3+ and PPi and exhibited fluorescence enhancement and quenching properties in HeLa cells.
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