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Direct synthesis of well-defined zwitterionic cyclodextrin polymers via atom transfer radical polymerization
European Polymer Journal ( IF 5.8 ) Pub Date : 2019-07-01 , DOI: 10.1016/j.eurpolymj.2019.03.020
Jakob Stensgaard Diget , Lars Wagner Städe , Thorbjørn Terndrup Nielsen

Abstract A versatile atom transfer radical polymerization (ATRP) protocol was developed for the direct homo- and copolymerization of a sulfobetaine monomer, [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium (SBMA), and a mono-functionalized β-cyclodextrin (βCD) methacrylate monomer. The polymers were characterized using 1- and 2D NMR spectroscopy and asymmetrical flow field-flow fractionation (AF4). Low dispersities (ĐM = Mw/Mn) and high initiator efficiencies, of both the homo- and copolymers, indicated good control of the polymerization. The work thus represents one of the few reports where low ĐM values are obtained for direct ATRP of SBMA and βCD monomers. The novel βCD copolymer showed salt-dependent upper critical solution temperature (UCST) behavior, while isothermal titration calorimetry revealed excellent binding properties.

中文翻译:

通过原子转移自由基聚合直接合成明确定义的两性离子环糊精聚合物

摘要 开发了一种通用的原子转移自由基聚合 (ATRP) 方案,用于磺基甜菜碱单体、[2-(甲基丙烯酰氧基)乙基]二甲基-(3-磺丙基)铵 (SBMA) 和单官能化的直接均聚和共聚。 β-环糊精 (βCD) 甲基丙烯酸酯单体。聚合物使用 1- 和 2D NMR 光谱和不对称流场-流分馏 (AF4) 进行表征。均聚物和共聚物的低分散性 (ĐM = Mw/Mn) 和高引发剂效率表明聚合控制良好。因此,这项工作代表了为 SBMA 和 βCD 单体的直接 ATRP 获得低 ĐM 值的少数报告之一。新型 βCD 共聚物显示出依赖于盐的上限临界溶解温度 (UCST) 行为,而等温滴定量热法显示出优异的结合性能。
更新日期:2019-07-01
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