Removal of Anions from Aqueous Media by Means of a Thermoresponsive Calix[4]pyrrole Amphiphilic Polymer

被引：18
作者：
Ji, Xiaofan [1 ]
Guo, Chenxing [1 ]
Chen, Wei [1 ]
Long, Lingliang [1 ,3 ]
Zhang, Gengwu [4 ]
Khashab, Niveen M. [4 ]
Sessler, Jonathan L. [1 ,2 ]
机构：
[1] Univ Texas Austin, Dept Chem, 105 East 24th St,Stop A5300, Austin, TX 78712 USA
[2] Shanghai Univ, Ctr Supramol Chem & Catalysis, Shanghai 200444, Peoples R China
[3] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Jiangsu, Peoples R China
[4] King Abdullah Univ Sci & Technol, Smart Hybrid Mat SHMs Lab, Adv Membranes & Porous Mat Ctr, Thuwal 23955, Saudi Arabia
来源：
CHEMISTRY-A EUROPEAN JOURNAL | 2018年 / 24卷 / 59期
关键词：
amphiphilic polymers; anion recognition; calixpyrroles; thermoresponsiveness; water purification; DISCRETE ORGANOPLATINUM(II) METALLACYCLES; PENDANT CALIXPYRROLES; EXTRACTION; BINDING; RECOGNITION; RECEPTOR; METHACRYLATE)S; CONSTRUCTION; METATHESIS; ASSEMBLIES;
D O I：
10.1002/chem.201804335
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
To address the challenge of removing unwanted anions from aqueous media under extraction-free conditions we have prepared a thermoresponsive amphiphilic polymer with pendent calix[4]pyrrole (C4P) receptors. Because of its amphipathicity, this polymer self-assembles into micelles in water. These micelles contain the C4P receptors buried in a hydrophobic core. This allows uptake of various cesium anions into the micelles. Due to the thermal responsiveness of the hydrophilic block chain, the anion-bearing micelles precipitate in water upon heating. Simple filtration allows their removal from the aqueous environment, thus allowing for effective water purification. Treating the anion-trapped micelles with acidic aqueous solution leads to the competition-induced release of the bound anion and thus recycling the polymeric material.
引用
收藏
页码：15791 / 15795
页数：5
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