Journal
OPTICAL MATERIALS
Volume 95, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2019.109210
Keywords
Fluorescent probe; Aluminium ion; Pyridine; Salicylaldehyde; 2-Hydroxy-1-naphthaldehyde
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Funding
- Science and Technology Research Program of Education department of Jiangxi Province, China [GJJ170928]
- National Natural Science Foundation of China [61741510]
- teaching reform project of shangrao normal university [JG-17-08]
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Two new fluorescent probes HL1 and HL2 based pyridine-derived Schiff-bases have been synthesized and characterized. The structure of HL1 and HL2 were confirmed by single crystal X-ray diffraction. The probes HL1 and HL2 exhibited turn-on fluorescence response toward Al3+ with a color change from colorless to aquamarine. Meanwhile, HL1 and HL2 showed good selective and sensitive to Al3+ with a low detection limit of 3.2 x 10(-9) M for HL1 and 2.9 x 10(-8) M for HL2, respectively. In addition, the binding stoichiometry ratio, binding mode and sensing mechanism between HL and Al3+ were also investigated by Job plot's analysis, mass spectrometry and 1 H NMR titration experiment. Moreover,the sensor HL1 and HL2 were applied for monitoring Al3+ ion in natural water samples.
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