Selective and sensitive fluorescence-shift probes based on two dansyl groups for mercury(II) ion detection

被引：20
作者：
Ma, Li-Jun [1 ]
Liu, Jialun [1 ]
Deng, Lefang [1 ]
Zhao, Meili [1 ]
Deng, Zhifu [1 ]
Li, Xutian [1 ]
Tang, Jian [1 ]
Yang, Liting [1 ]
机构：
[1] S China Normal Univ, Dept Chem & Environm, Guangzhou 510631, Guangdong, Peoples R China
来源：
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES | 2014年 / 13卷 / 11期
关键词：
TURN-ON; AQUEOUS-SOLUTION; LEAD-ION; HG2+; SENSOR; CHEMOSENSOR; CHEMODOSIMETER; 1,3-ALTERNATE; FLUOROPHORES; CONFORMATION;
D O I：
10.1039/c4pp00094c
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Two probes (1 and 2) bearing two dansyl fluorophores were synthesized and applied to the detection of mercury(II) ions in aqueous solution. These probes exhibited a selective response to Hg2+ in a buffered solution, with high sensitivity and a unique fluorescence response signal which displayed a blue-shift effect in the fluorescence emission peak. The Hg2+ recognition mechanisms of the probes were determined by NMR spectroscopy, ESI-MS and UV-vis spectroscopy. The results showed that probe 1 and mercury(II) ions formed an unusual 2 : 2 stoichiometric ratio complex, while probe 2 and Hg2+ formed a multidentate complex with a stoichiometric ratio of 2 : 1.
引用
收藏
页码：1521 / 1528
页数：8
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