本文构建了一种基于3-苯丙噻唑基-2-羟基-5-甲基苯甲醛的荧光探针用于检测铝离子.该荧光探针能够灵敏、高选择性地检测铝离子,并显示出颜色和强烈的荧光变化双重响应.研究结果表明,该探针对铝离子表现出非常好的荧光增强效果,检测过程中其它金属离子不会对检测结果产生明显的干扰.其比率荧光强度(I490/I567)与铝离子的浓度(0～20 μmol/L)之间具有良好的线性关系,检测限低至0.5 μmol/L.由于具有高效的选择性,该探针可以用于检测污染河水中的铝离子含量.
In this paper,we constructed a kind of fluorescent probe based on 3-(benzo[d] thiazol-2-yl)-2-hydroxy-5-methylbenzaldehyde for the detection of aluminum ions.The fluorescent probe has high sensitivity and selective detection to aluminum ions,and can display the dual response of color and strong fluorescence change.Research results show that the probe showed very good fluorescence enhancement effect to aluminum ion.Other metal ions in the process of test do not have noticeable interference to the test results.The ratio of fluorescence intensity (I490/I567) with aluminum ion concentration (0-20 μmol/L) shows a good linear relationship between the probe and aluminum.The detection limit is as low as 0.5 μmol/L.Due to its high sensitivity and selectivity,the probe can be used for detection of aluminum ion content in the polluted river.
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