| Abstrakt: |
A new fluorescent sensor (E)-3-(1-acetyl-5-styryl-4,5-dihydro-1H -pyrazol-3-yl)-4-hydroxy-6-methyl-2H-pyran-2-one (DRS) for Al3+detection was developed, and the optical properties of DRS were measured in H2O/DMSO (pH = 5.5, 99:1, V/V) solution. DRS showed notable fluorescence enhancement in the presence of Al3+and had good selectivity and sensitivity to Al3+. Compared to the probes designed by other previous research groups, a lower detection limit (9.13 × 10−9M) and a shorter response time (14 s) were found. Furthermore, the Job’s plot showed that the stoichiometric ratio among DRS and Al3+was 1:1, and 1H NMR, IR and DFT calculations showed that the sensing mechanism of the probe DRS for detecting Al3+was chelation-enhanced fluorescence. DRS has also been applied to Al3+ion detection in actual water samples, drugs, and HeLa cells, indicating that it has potential application value in the biological process of detecting Al3+ion. |
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