A colorimetric anion sensing system utilising competitive C-H•••X- hydrogen bonding

被引：5
|
作者：
Sato, Kiyoshi [1 ]
Okabe, Yuko [1 ]
Onitake, Tomomi [1 ]
Yamaguchi, Motowo [1 ]
Arai, Sadao [2 ]
Yamagishi, Takamichi [1 ]
机构：
[1] Tokyo Metropolitan Univ, Grad Sch Urban Environm Sci, Dept Appl Chem, Tokyo 1920397, Japan
[2] Tokyo Med Univ, Dept Chem, Shinjyuku Ku, Tokyo, Japan
来源：
SUPRAMOLECULAR CHEMISTRY | 2011年 / 23卷 / 3-4期
关键词：
anion recognition; imidazolium; competitive binding; C-H hydrogen bonding; colorimetric anion sensing; DYES; INDICATORS; RECEPTORS; COMPLEXES; LEADS; RING;
D O I：
10.1080/10610278.2010.521839
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Combination of tripodal imidazolium-based anion receptor 1 and azonia betaine dye 2 has enabled a colorimetric detection of halide ions by competitive binding. The imidazolium groups of receptor 1 interact with the phenoxy oxygen of betaine dye 2 in acetonitrile solution by multiple [C-H...O-] hydrogen bonds. Consequently, the blue-coloured solution of the dye immediately turns to greenish yellow upon addition of receptor 1 due to the receptor-dye complex formation. The reversed colour change, which is caused by displacement of guests, is observed by the addition of Cl-, Br- or I- anions to the receptor-dye complex solution.
引用
收藏
页码：249 / 251
页数：3
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