Selective Encapsulation of Ionic Dyes by Core/Shell Amphiphilic Macromolecules Derived from Hyperbranched Polyethylenimine: Properties through Structures
Selective Encapsulation of Ionic Dyes by Core/Shell Amphiphilic Macromolecules Derived from Hyperbranched Polyethylenimine: Properties through Structures
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DOI：
10.1002/macp.201100186
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发表时间：
2011-09
影响因子：
2.5
通讯作者：
Decheng Wan;Yip-Kai Lai;M. Jin;H. Pu
中科院分区：
文献类型：
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作者：
Decheng Wan;Yip-Kai Lai;M. Jin;H. Pu
由 HPEI 衍生的反胶束样 CAM，以聚集体或单分子胶束形式存在，在封装水溶性和离子染料时表现出选择性。对于刚性染料，封装能力很弱，而对于刚性较小的染料，封装取决于其电子特性。通过 CAM 的电子工程，可以极大地促进或抑制互补的 CAM/染料相互作用强度。 CAM 的电子工程还可以对客体亲和力产生非线性影响，从而放大竞争性客体物种的差异，并进一步导致高度选择性的封装。即使一种染料与另一种染料络合，CAM 仍然可以实现高度选择性的封装。
Reverse‐micelle‐like CAMs derived from HPEI, which exist as either aggregates or unimolecular micelles, show selectivity upon the encapsulation of water‐soluble and ionic dyes. For rigid dyes, the encapsulating ability is very weak, while for less rigid ones, the encapsulation is dependent on their electronic properties. Through electronic engineering of the CAM, the complementary CAM/dye interaction strengths can be greatly favored or disfavored. Electronic engineering of the CAM can also exert a non‐linear effect on the guest affinities and thus amplify the difference of the competitive guest species and further lead to highly selective encapsulations. Even if one dye species is complexed by another dye species, highly selective encapsulation can still be realized by a CAM.