Bifunctional fluorescent thiacalix[4]arene based chemosensor for Cu2+ and F- ions

被引:81
作者
Bhalla, Vandana [1 ]
Kumar, Rajesh [1 ]
Kumar, Manoj [1 ]
Dhir, Abhimanew [1 ]
机构
[1] Guru Nanak Dev Univ, Dept Chem, Amritsar 143005, Punjab, India
关键词
thaicalix[4]arene; ratiometric sensing; fluorescent Cu2+ sensor;
D O I
10.1016/j.tet.2007.08.021
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A new thiacalix[4]arene based fluorescent sensor bearing two dansyl groups has been synthesized in cone conformation. In CH3CN:CH2Cl2(1:1), the presence of Cu (II) induces the formation of a 1:1 metal: ligand complex, which exhibits increasing emission at 433 nm at the expense of the fluorescent emission of 1 centered at 504 nm. The detection limit of the sensor for Cu2+ is 2 x 10(-7) mol L-1. For anion sensing, 1 shows a high selectivity for fluoride ions over other anions tested. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:11153 / 11159
页数:7
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