Reversible "off-on" fluorescent chemosensor for Hg2+ based on rhodamine derivative

被引：37
|
作者：
Liu, Weimin [1 ]
Chen, Jianhong [1 ]
Xu, Liwei [1 ]
Wu, Jiasheng [1 ]
Xu, Haitao [1 ]
Zhang, Hongyan [1 ]
Wang, Pengfei [1 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2012年 / 85卷 / 01期
关键词：
Fluorescent spectroscopy; Hg2+ chemosensor; Rhodamine B; Off-on; Reversibility; AQUEOUS-SOLUTION; MERCURY; CHEMODOSIMETER; TRANSPORT; TOOLS; LIGHT;
D O I：
10.1016/j.saa.2011.08.071
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A novel and simple fluorescent chemosensor based on rhodamine was designed and synthesized to detect Hg2+ with high selectivity. The structure of chemosensor 1 was characterized by IR, H-1 NMR, and HRMS spectroscopies. Chemosensor 1 exhibited distinct fluorescent and colorimetric changes toward Hg2+ in an ethanol/water (80/20, v/v) solution, which resulted in the formation of 1/Hg2+ complex with the Hg2+-induced ring opening of the spirolactam ring in rhodamine. The reversibility of chemosensor 1 was verified through its spectral response toward Hg2+ ions and TBAI (tetrabutylammonium iodide) titration experiments. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：38 / 42
页数：5
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