Synthesis, recognition of metal ions of salicylidenimine functionalized p-tert-butylcalix[n]arene-core dendrimers

被引：7

作者：

Wang, Yunyan ^{[1
]}

Cai, Yahua ^{[1
]}

Yan, Chaoguo ^{[1
]}

机构：

[1] Yangzhou Univ, Coll chem & Chem Engn, Yangzhou 225002, Peoples R China

来源：

SUPRAMOLECULAR CHEMISTRY | 2007年 / 19卷 / 07期

基金：

中国国家自然科学基金;

关键词：

calixarene; dendrimer; extraction; Schiff base; complexation; ion recognition; CALIXARENE-BASED DENDRIMERS; RECEPTORS;

D O I：

10.1080/10610270601124001

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of salicylidenimine functionalized p-tert-butylcalix[n]arene-core dendrimers 7a-b were synthesized in higher yields by divergent method from the corresponding ethyl p-butylcalix[n]arylacetates 2a-b (n = 6, 8). 2a-b were first treated with excess of 1,6-diaminohexane to give amide derivatives with free amine terminal groups 3a-b, which in turn reacted with salicylaldehyde in alcohol to yield the first generation of Schiff bases 4a-b. 3a-b reacted with ethyl acrylate, ammonolized with 1,6-diaminohexane and condonsated with salicylaldehyde successfully to give the second generation of Schiff bases 7a-b. The extraction and binding properties of the dentritic Schiff bases 4a-b and 7a-b for several kinds of metal ions were studied with UV-Vis spectroscopy and atomic absorption spectroscopy. In which they showed a great affinity for soft Cu2+ ions and formed 1:1 or 1:2 stoichiometric complexes.

引用

页码：467 / 473

页数：7

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