基于含喹啉单元的光致变色二芳基乙烯的高选择性汞荧光化学传感器。
A Highly Selective Hg Fluorescent Chemosensor Based On Photochromic Diarylethene With Quinoline Unit.
机构信息
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, 330013, People's Republic of China.
Department of Ecology and Environment, Yuzhang Normal University, Nanchang, 330103, People's Republic of China.
出版信息
J Fluoresc. 2022 Nov;32(6):2119-2128. doi: 10.1007/s10895-022-02930-5. Epub 2022 Aug 6.
A novel diarylethene-based fluorescent chemosensor containing a quinoline unit (1o) had been designed and synthesized. 1o showed good photochromic ability and fluorescence switching properties by alternating UV/vis light irradiation. The chemosensor showed high "Turn-off" fluorescent selectivity for Hg by competitive tests of the fluorescence reaction in the presence other ions in acetonitrile solution. The stoichiometry between the compound 1o and Hg was 1:1 by Job's plot curve and HRMS analysis. In addition, the LOD for Hg was calculated as 60 nM. The fluorescence emission can be back to the "Turn-on" state by adding EDTA. Based on these facts, a molecular logic gate that including four input signals (UV/vis and Hg/EDTA) and one output signal (fluorescent intensity at 491 nm) was designed.
一种基于二苯并噻吩的荧光化学传感器，含有一个喹啉单元（1o），已被设计和合成。1o 通过交替的 UV/vis 光照射显示出良好的光致变色能力和荧光开关性能。该化学传感器在乙腈溶液中存在其他离子的情况下通过荧光反应的竞争测试显示出对 Hg 的高“关闭”荧光选择性。通过 Job 曲线和 HRMS 分析，化合物 1o 和 Hg 的化学计量比为 1:1。此外，Hg 的 LOD 计算为 60 nM。荧光发射可以通过添加 EDTA 恢复到“开启”状态。基于这些事实，设计了一个包括四个输入信号（UV/vis 和 Hg/EDTA）和一个输出信号（在 491nm 处的荧光强度）的分子逻辑门。
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