A colorimetric approach to anion sensing:: A selective chemosensor of fluoride ions, in which color is generated by anion-enhanced π delocalization

被引：227

作者：

Vázquez, M

Fabbrizzi, L ^{[1
]}

Taglietti, A

Pedrido, RM

González-Noya, AM

Bermejo, MR

机构：

[1] Univ Pavia, Dipartimento Chim Gen, Lab Chim Supramol, I-27100 Pavia, Italy

[2] Univ Santiago de Compostela, Fac Quim, Dept Quim Inorgan, Santiago De Compostela 15782, Spain

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2004年 / 43卷 / 15期

关键词：

anions; colorimetric probes; hydrogen bonds; hydrogen fluoride; sensors;

D O I：

10.1002/anie.200353148

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A colorless neutral receptor with no particular chromogenic substituents selectively recognizes fluoride ions with a concomitant development of a yellow color (see scheme). The receptor contains two equivalent arms, each equipped with a thiourea fragment. Color originates from the extended π delocalization induced by the strong hydrogen-bonding interaction of the F- ion with the internal NH groups of thiourea moieties.

引用

页码：1962 / 1965

页数：4

共 25 条

[1]

[Anonymous], ANGEW CHEM

[2] Second generation calixpyrrole anion sensors [J].