一种用于检测铜（II）离子的简单关闭型席夫碱荧光传感器及其在水质分析中的应用。
A Simple Turn-off Schiff Base Fluorescent Sensor for Copper (II) Ion and Its Application in Water Analysis.
机构信息
The key Laboratory of Environmental Pollution Monitoring and Disease Control, School of Public Health, Ministry of Education, Guizhou Medical University, Guiyang 550004, China.
School of Basic Medical Science, Guizhou Medical University, Guiyang 550004, China.
出版信息
Molecules. 2021 Feb 25;26(5):1233. doi: 10.3390/molecules26051233.
Abstract
An aniline-functionalized naphthalene dialdehyde Schiff base fluorescent probe with aggregation-induced enhanced emission (AIEE) characteristics was synthesized via a simple one-step condensation reaction and exhibited excellent sensitivity and selectivity towards copper(II) ions in aqueous media with a fluorescence " turn-off " phenomenon. The detection limit of the probe is 1.64 × 10 mol·L. Furthermore, according to the results of the UV-vis/fluorescence titrations, Job's plot method and H-NMR titrations, a 1:2 stoichiometry was identified. The binding constant between and Cu was calculated to be = 1.222 × 10. In addition, the AIEE fluorescent probe could be applied to detection in real water samples with satisfactory recoveries in the range 99.10-102.90% in lake water and 98.49-102.37% in tap water.
摘要
一种具有聚集诱导增强发射（AIEE）特性的苯胺功能化萘二醛席夫碱荧光探针，通过简单的一步缩合反应合成，在水相中对铜（II）离子表现出优异的灵敏度和选择性，具有荧光“关闭”现象。探针的检测限为 1.64×10 摩尔·L。此外，根据紫外-可见/荧光滴定、Job 图法和 H-NMR 滴定的结果，确定了 1:2 的化学计量比。和 Cu 之间的结合常数计算为 = 1.222×10。此外，AIEE 荧光探针 可用于实际水样中的检测，在湖水和自来水中的回收率范围分别为 99.10-102.90%和 98.49-102.37%。
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