Novel anion receptors: hybrid materials based on quaternary ammonium salts for selective extraction of dichromate ions

被引：3
|
作者：
Tabisz, Lukasz [1 ]
Pankiewicz, Radoslaw [1 ]
Leska, Boguslawa [1 ]
机构：
[1] Adam Mickiewicz Univ, Fac Chem, PL-61614 Poznan, Poland
来源：
TETRAHEDRON LETTERS | 2014年 / 55卷 / 47期
关键词：
Hybrid materials; Dichromate complexing agent; Polyamine; Potentiometric titration; PHASE-TRANSFER CATALYSTS; FUNCTIONALIZED SILICA; EFFICIENT TRIMETHYLSILYLATION; POLYPODANDS; ADSORPTION; ALCOHOLS; LIGANDS;
D O I：
10.1016/j.tetlet.2014.09.117
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Novel hybrid materials were obtained by modification of three (poly)amine-appended mesoporous silica gels. For all matrices of different side chain lengths, the process proceeded with excellent modification rates. The free analogues of these hybrid materials, podand-type receptors, were also prepared employing a very similar procedure. The organosilicas synthesized were characterized by NMR, infrared spectroscopy, and semi-empirical methods. Their anion exchange properties were conveniently investigated using precise, but also time and cost-efficient titration experiments, and the products were found to be powerful complexing agents for dichromate ions. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6416 / 6419
页数：4
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