新型吡啶-杯[4]芳烃荧光探针的合成及其对Fe3+的检测性能

合成了一种新型的高选择性检测Fe3+的上沿功能化吡啶-杯4]芳烃荧光探针，其结构经1H NMR， 13C NMR和HR-MS表征。离子检测实验结果表明,该吡啶-杯4]芳烃探针的最大吸收峰出现在295 nm处,并在371 nm处显示出一个强的荧光发射带。与其他金属离子相比，新型探针对Fe3+表现出高选择性和强抗干扰能力的荧光淬灭响应。通过荧光滴定法和Job曲线图研究了探针与Fe3+的结合性。结果表明,探针与Fe3+形成2:1的配合物，缔合常数为3.26×107 M-1，检出限为7.9×10-7 M。

Synthesis and Fe3+DetectionProperty of A Novel Pyridine-Calix[4]arene Fluorescent Probe

A novel upper-rim functionalized pyridine-calix4]arene flourescence probe for highly selective detection of Fe3+ was synthesized, and its structure was characterized by 1H NMR, 13C NMR and HR-MS, respectively. The results of ion detection experiments showed that the maximum absorption peak of the pyridine-calix4]arene probe appeared at 295 nm and displayed a strong fluorescence emission band at 371 nm. Compared with other metal ions, the probe exhibits fluorescent quenching response to Fe3+ with high selectivity and strong anti-interference ability. The binding property of the probe with Fe3+ was studied by a combination of fluorescence titration and Job's plot, and the results indicated that a 2:1 coordination complex was formed by the probe with Fe3+, the association constant was 3.26×107 M-1, and the detection limit was 7.9×10-7 M.