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一种基于带有喹啉单元的光致变色二芳基乙烯的汞离子比色和荧光化学传感器。

A colorimetric and fluorescent chemosensor for Hg based on a photochromic diarylethene with a quinoline unit.

作者信息

Guo Shuli, Fan Congbin, Liu Gang, Pu Shouzhi

机构信息

Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University Nanchang 330013 PR China

出版信息

RSC Adv. 2018 Nov 28;8(70):39854-39864. doi: 10.1039/c8ra08358d.

DOI:10.1039/c8ra08358d
PMID:35558256
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9091323/
Abstract

A new colorimetric and fluorescent 'on-off' chemosensor, 1O, based on a photochromic diarylethene with a quinoline unit was designed and synthesized. The chemosensor 1O demonstrated selective and sensitive detection of Hg ions in the presence of other competitive metal ions in acetonitrile. The stoichiometric ratio of the sensor 1O for Hg was determined to be 1 : 1, and the limit of detection of the probe 1O was calculated to be 56.3 nM for Hg. In addition, a molecular logic circuit with four inputs and one output was successfully constructed with UV/vis light and metal-responsive behavior. ESI-MS spectroscopy, Job's plot analysis, and H NMR titration experiments confirm the binding behavior between 1O and Hg.

摘要

设计并合成了一种基于含喹啉单元的光致变色二芳基乙烯的新型比色和荧光“开-关”化学传感器1O。化学传感器1O在乙腈中存在其他竞争性金属离子的情况下，对Hg离子表现出选择性和灵敏的检测能力。确定传感器1O与Hg的化学计量比为1∶1，计算得出探针1O对Hg的检测限为56.3 nM。此外，利用紫外/可见光和金属响应行为成功构建了一个具有四个输入和一个输出的分子逻辑电路。电喷雾电离质谱（ESI-MS）光谱、乔布氏图分析和1H NMR滴定实验证实了1O与Hg之间的结合行为。

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