设计合成了化合物4-羟基苯甲酰-(2-羟基萘甲醛)腙(L)探针,经金属离子识别研究发现探针L对Al3+具有良好的荧光增强识别效果且不受其它金属离子的干扰,且识别过程中溶液的颜色发生了明显变化,可以实现Al3+的可视法检测,核磁滴定、job-plot、基质辅助激光解吸电离飞行时间质谱(MALDI-TOF)等实验结果显示,探针L与Al3+以摩尔比2∶1的方式进行配位.通过对紫外滴定数据的非线性拟合分析,探针L与Al3+的结合常数为1.3×104 L/mol,最低检测限为3.71×10-6 L/mol.因此,该腙类衍生物作为Al3的荧光及比色探针,识别体系线性范围较宽,检测限低,在痕量Al3的检测方面具有潜在的应用价值.
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