共聚物
材料科学
两亲性
聚合物
自组装
四氢呋喃
纳米颗粒
化学工程
溶剂
高分子化学
离子液体
丙烯酸
离子键合
纳米技术
化学
有机化学
离子
催化作用
复合材料
工程类
作者
Hongkun He,Khosrow Rahimi,Mingjiang Zhong,Ahmed Mourran,David R. Luebke,Hunaid Nulwala,Martin Möller,Krzysztof Matyjaszewski
摘要
Cubosomes are micro- and nanoparticles with a bicontinuous cubic two-phase structure, reported for the self-assembly of low molecular weight surfactants, for example, lipids, but rarely formed by polymers. These objects are characterized by a maximum continuous interface and high interface to volume ratio, which makes them promising candidates for efficient adsorbents and host-guest applications. Here we demonstrate self-assembly to nanoscale cuboidal particles with a bicontinuous cubic structure by amphiphilic poly(ionic liquid) diblock copolymers, poly(acrylic acid)-block-poly(4-vinylbenzyl)-3-butyl imidazolium bis(trifluoromethylsulfonyl)imide, in a mixture of tetrahydrofuran and water under optimized conditions. Structure determining parameters include polymer composition and concentration, temperature, and the variation of the solvent mixture. The formation of the cubosomes can be explained by the hierarchical interactions of the constituent components. The lattice structure of the block copolymers can be transferred to the shape of the particle as it is common for atomic and molecular faceted crystals.
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