A simple fluorescent probe for detection of Ag+ and Cd2+ and its Cd2+ complex for sequential recognition of S2-

被引：7
|
作者：
Li, Shengling [1 ]
Cao, Duanlin [1 ]
Ma, Wenbing [1 ,2 ]
Hu, Zhiyong [1 ,2 ]
Meng, Xianjiao [3 ]
Li, Zhichun [1 ]
Yuan, Changchun [1 ]
Zhou, Tao [1 ]
Han, Xinghua [1 ,2 ]
机构：
[1] North Univ China, Sch Chem Engn & Technol, Taiyuan 030051, Peoples R China
[2] North Univ China, Natl Demonstrat Ctr Expt Comprehenisve Chem Engn, Taiyuan 030051, Peoples R China
[3] Shanxi Agr Univ, Coll Arts & Sci, Taigu 030801, Shanxi, Peoples R China
来源：
RSC ADVANCES | 2020年 / 10卷 / 31期
关键词：
AQUEOUS-SOLUTION; ICT; CU2+; ZN2+; HG2+; CADMIUM; AL3+; PET;
D O I：
10.1039/d0ra01768j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study, we designed and synthesized a simple probe 2-(8-((8-methoxyquinolin-2-yl)methoxy)quinolin-2-yl)benzo[d]thiazole (DQT) for detection of Ag+ and Cd2+ in a CH3OH/HEPES (9 : 1 v/v, pH = 7.30) buffer system. Its structure was characterized by NMR, ESI-HR-MS and DFT calculations, and its fluorescence performance was also investigated. Probe DQT showed fluorescence quenching in response to Ag+ and Cd2+ with low detection limits of 0.42 mu M and 0.26 mu M, respectively. Importantly, the complexation of the probe with Cd2+ resulted in a red shift from blue to green, making it possible to detect Ag+ and Cd2+ by the naked eye under an ultraviolet lamp. The DQT-Cd2+ complex could be used for sequential recognition of S2-. The recovery response could be repeated 3 times by alternate addition of Cd2+ and S2-. A filter paper strip test further demonstrated the potential of probe DQT as a convenient and rapid assay.
引用
收藏
页码：18434 / 18439
页数：6
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