Diazo-coupled calix[4]arenes for qualitative analytical screening of metal ions

被引：44

作者：

Kim, Tae Hyun ^{[1
]}

Kim, Su Ho ^{[2
]}

Van Tan, Le ^{[3
]}

Dong, Yunyan ^{[1
]}

Kim, Hasuck ^{[1
]}

Kim, Jong Seung ^{[2
]}

机构：

[1] Seoul Natl Univ, Dept Chem, Seoul 151747, South Korea

[2] Korea Univ, Dept Chem, Seoul 136701, South Korea

[3] Ho Chi Minh City Univ Ind, Fac Chem Engn, Ho Chi Minh City, Vietnam

来源：

TALANTA | 2008年 / 74卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

calix[4]arenes; chromoionophores; complexation; metal ion;

D O I：

10.1016/j.talanta.2007.10.033

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

New chromogenic diazophenylcalix[4]arenes 1 and 2 were synthesized in cone conformation. Compound I with the ortho-carboxyl groups in CH3CN solution preferentially binds with alkaline earth and transition metal ions, whereas no significant changes in absorption spectra are observed in the presence of alkali metal ions. While 2 with the ortho-ester groups shows selective complexation properties towards transition metal ions over alkali and alkaline earth metal ions. The detection of metal ions gives rise to bathochromic shifts in the absorption spectra (from orange/yellow to red), which is clearly visible even to the naked eye. According to the selective color changes using both receptors upon cation complexation, one can set up a qualitative analytical routine to screen alkali, alkaline earth, and transition metal ions. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1654 / 1658

页数：5