Schiff base modified α-cyanostilbene derivative with aggregation-induced emission enhancement characteristics for Hg2+ detection

被引：40
作者：
Zhang, Gaobin [1 ]
Ding, Aixiang [1 ]
Zhang, Yao [1 ]
Yang, Longmei [1 ]
Kong, Lin [1 ]
Zhang, Xuanjun [2 ]
Tao, Xutang [3 ]
Tian, Yupeng [1 ]
Yang, Jiaxiang [1 ,3 ]
机构：
[1] Anhui Univ, Dept Chem, Key Lab Funct Inorgan Mat Anhui Prov, Hefei 230039, Peoples R China
[2] Linkoping Univ, Dept Phys Chem & Biol, Div Mol Surface Phys & Nanosci, S-58183 Linkoping, Sweden
[3] Shandong Univ, State Key Lab Mat, Jinan 502100, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 202卷
基金：
中国国家自然科学基金;
关键词：
Fluorescence; Chemosensor; Aggregation-induced emission enhancement (AIEE); Schiff base; Mercury; ON FLUORESCENT CHEMOSENSOR; SELECTIVE DETECTION; AQUEOUS-SOLUTIONS; METAL-IONS; MERCURY; SENSOR; PYRENE; PROBE; RECOGNITION; ACCEPTOR;
D O I：
10.1016/j.snb.2014.05.057
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A Schiff base functionalized alpha-cyanostilbene derivative (TS) has been synthesized via a simple and straightforward method and characterized by FT-IR, H-1 NMR, C-13 NMR and mass spectra. TS possessed excellent AIEE properties and exhibited "turn-on" fluorescent responses to Hg2+. The results of UV-vis and fluorescence titration experiments revealed that TS was selective and sensitive to Hg2+ in pure THF and aqueous environment. The coordination of TS and Hg2+ ions generated TS-Hg complex locked the "dancing molecule" because of the flexible chain in the middle of the molecule and the complex was lower soluble induced formation of large aggregates that further limited the non-radiative relaxation channel enhanced emission after adding Hg2+ ions in aqueous solution, which had been confirmed by H-1 NMR and dynamic light scattering (DLS). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：209 / 216
页数：8
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