期刊
RESEARCH ON CHEMICAL INTERMEDIATES
卷 48, 期 1, 页码 85-100出版社
SPRINGER
DOI: 10.1007/s11164-021-04625-1
关键词
Fluorescence detection; Colorimetric probe; Bisulfite; Hypochlorite; Mechanism study
资金
- Department of Science and Technology of Liaoning Province [2019-MS-215, 2019-ZD-0470]
Two fluorescent probes based on coumarin structure were developed for specific detection of bisulfite and hypochlorite, showing high selectivity and sensitivity, with probe L1 successfully applied for monitoring the level of HSO3- in sugar and water samples.
Based on coumarin structure, two fluorescent probes (L1 and L2) were constructed for specific detection of bisulfite (HSO3-) and hypochlorite (ClO-). Electron deficient carbon-carbon double bond and acidic proton were introduced to regulate the performance of two fluorescent molecules. Both L1 and L2 displayed high selectivity and sensitivity, low detection limit (28.2, 52.0 nM), fast response time and visible color change after addition of HSO3- or ClO-. Different techniques including H-1 NMR analysis, high-resolution mass spectrometry and density functional theory calculations were used to confirm our conception and to get insight into the interaction of receptors with anions. Furthermore, probe L1 was successfully applied to monitor the level of HSO3- in sugar samples and real water samples.
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