Triazole-modified calix[4]crown as a novel fluorescent on-off switchable chemosensor

被引：212

作者：

Chang, Kai-Chi ^{[1
]}

Su, In-Hao ^{[1
]}

Senthilvelan, Annamalai ^{[1
]}

Chung, Wen-Sheng ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30050, Taiwan

来源：

ORGANIC LETTERS | 2007年 / 9卷 / 17期

关键词：

D O I：

10.1021/ol071337+

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A novel fluorescent on-off switchable chemosensor 1 with two different types of cationic binding sites is synthesized, which is composed of a triazole-modified calix[4]crown in the 1,3-alternate conformation. Among 15 metal ions examined, the fluorescence of 1 was strongly quenched by Hg2+, Cu2+, Cr3+, and Pb2+; however, the revival of emission from the strongly quenched 1 center dot Pb2+ complex was achievable by the addition of K+, Ba2+, or Zn2+ ions. Thus, metal ion exchange can trigger an on-off switchable fluorescent chemosensor.

引用

页码：3363 / 3366

页数：4

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