Thioacetal modified phenanthroimidazole as fluorescence probe for rapid and sensitive detection of Hg2+ in aqueous solution assisted by surfactant

被引:27
作者
Gao, Yunyan [1 ]
Yi, Na [1 ]
Ou, Zhize [1 ]
Li, Zhiyuan [1 ]
Ma, Tuotuo [1 ]
Jia, Hongdan [1 ]
Xing, Wenli [1 ]
Yang, Guoqiang [2 ]
Li, Yi [3 ]
机构
[1] Northwestern Polytech Univ, Sch Sci, Dept Appl Chem, Xian 710072, Shaanxi, Peoples R China
[2] Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
基金
中国国家自然科学基金;
关键词
Fluorescence probe; Mercury; Phenanthroimidazole; Surfactant; LIVING CELLS; RATIOMETRIC FLUORESCENCE; SELECTIVE DETECTION; MERCURY IONS; HG2+-PROMOTED DEPROTECTION; MOLECULAR SENSOR; WATER; CU2+; MICELLES; CHEMODOSIMETER;
D O I
10.1016/j.snb.2018.04.017
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A novel fluorescence probe PISOH comprising phenanthroimidazole as a fluorophore and thioacetal as recognition unit is designed and synthesized. PISOH displays high selective turn-on fluorescence response toward Hg2+ with no interference from other metal cations, such as Cu2+, Ag+, Fe3+, Pb2+, etc. PISOH can be converted to the corresponding aldehyde PICHO in the presence of Hg2+, based on the Hg2+ promoted deprotection of thioacetal. Moreover, the fluorescence emission and sensing properties of PISOH can be modulated by surfactants in aqueous solution. PISOH exhibits a detection limit (LOD) of 1.16 nM for Hg2+ in aqueous Triton X-100 solution, much lower than that in DMF (LOD = 6.83 nM). The response time of PISOH for Hg2+ is around 1 min, suitable for rapid detection of Hg2+. Furthermore, the probe can be used to monitor Hg2+ effectively in living cells by fluorescence imaging. This work represents a novel and simple strategy for sensing of Hg2+ in pure water by using commercially available surfactants to solubilize fluorescent probe. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:136 / 144
页数:9
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