用于检测铜离子的聚集诱导猝灭型荧光探针。

AIE active turn-off fluorescent probe for the detection of Cu ions.

作者信息

Pannipara Mehboobali, Al-Sehemi Abdullah G, Kalam Abul, Asiri Abdullah M, Arshad Muhammad Nadeem

机构信息

Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.

Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2017 Aug 5;183:84-89. doi: 10.1016/j.saa.2017.04.045. Epub 2017 Apr 20.

DOI:10.1016/j.saa.2017.04.045

PMID:28437689

Abstract

A novel AIE active Schiff base compound (receptor 1) has been designed, synthesized and characterized spectroscopically. Receptor 1 show weak emission in solution state but emit strongly in solid state. The investigation on the AIE behavior of receptor 1 using solvent-non-solvent (THF-Water) interaction reveals a maximum PL intensity on reaching the water fraction 90% (fw=90) due to nanoaggregation. Furthermore, demonstration of metal ion sensing application of receptor 1 unravel that it could act as selective and sensitive sensor for Cu ions in aqueous solution via fluorescence "turn-off" manner. The quenching behavior of receptor 1 in presence of Cu ions were evaluated using Stern-Volmer plot.

摘要

一种新型的具有聚集诱导发光（AIE）活性的席夫碱化合物（受体1）已被设计、合成并通过光谱进行了表征。受体1在溶液状态下发射较弱，但在固态下发射强烈。利用溶剂-非溶剂（四氢呋喃-水）相互作用对受体1的AIE行为进行的研究表明，由于纳米聚集，在水含量达到90%（fw=90）时，其荧光发射强度达到最大值。此外，受体1的金属离子传感应用证明，它可以通过荧光“猝灭”方式作为水溶液中铜离子的选择性和灵敏传感器。使用斯特恩-沃尔默图评估了受体1在铜离子存在下的猝灭行为。