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

页码：249 / 251

页数：3

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