Can Nonspecific Host−Guest Interaction Lead to Highly Specific Encapsulation by a Supramolecular Nanocapsule?
Can Nonspecific Host−Guest Interaction Lead to Highly Specific Encapsulation by a Supramolecular Nanocapsule?
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DOI：
10.1021/ma900952e
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发表时间：
2009-06
期刊：
影响因子：
5.5
通讯作者：
Decheng Wan;Guang-Jia Wang;H. Pu;M. Jin
中科院分区：
文献类型：
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作者：
Decheng Wan;Guang-Jia Wang;H. Pu;M. Jin
本文介绍了一种简便、通用的高选择性分离离子染料的方法。超支化聚合物衍生的核壳型两亲性高分子纳米胶囊（CAM）的结构特征是在核中填充了密集的官能团，这为CAM的核工程和结构-性能评价提供了独特的机会。超支化聚乙烯亚胺（HPEI）与2-十六烷氧基甲基环氧乙烷通过一步温和有效的反应进行烷基化，得到HP（EI-C16 x）。（x = 0.10（1a）、0.15（1b）、0.20（1c）、0.30（1d）、0.60（1e）和0.90（1f），其中X表示被烷基化的氨基质子的分数）与疏水壳和亲水核。分别用环氧丙烷、缩水甘油、碘甲烷或琥珀酸酐进一步处理1d的核，得到羟基（2d，3d）、季铵（4d）和羧基（5d）填充的核。这些CAM显示出不同的客户负载能力和客户识别能力，并可用于...
A general and facile approach for highly selective separation of ionic dyes is described. Core−shell amphiphilic macromolecular nanocapsule (CAM) derived from hyperbranched polymer is structurally featured by the dense functional groups populated in the core, which provide a unique opportunity for the core engineering and structure−property evaluation of a CAM. Here hyperbranched polyethylenimine (HPEI) is alkylated with 2-hexadecyloxymethyloxirane via a single-step, mild and efficient reaction, leading to HP(EI-C16x) (x = 0.10 (1a), 0.15 (1b), 0.20 (1c), 0.30 (1d), 0.60 (1e), and 0.90 (1f), where x represents the fraction of amino protons being alkylated) with a hydrophobic shell and a hydrophilic core. The core of 1d is further treated with propylene oxide, glycidol, methyl iodide, or succinic anhydride, respectively, leading to hydroxyls (2d, 3d), quaternized ammoniums (4d) and carboxyls (5d) populated core. These CAMs show different guest loading capacity and guest recognizing ability and can be used ...