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A Simple Route to Hierarchical Rings of Diblock Copolymer Micelles.
Macromolecular Rapid Communications ( IF 4.6 ) Pub Date : 2019-11-28 , DOI: 10.1002/marc.201900525
Bijun Ni 1 , Yue Yin 1 , Juan Peng 1
Affiliation  

A hierarchically assembled necklace composed of amphiphilic diblock copolymer micelles is exquisitely produced by capitalizing on two concurrent self-assembly processes at different scales (i.e., "breath figure" strategy of diblock copolymer micelles solution evaporating in humid air to yield rings at the microscopic scale in conjunction with self-assembly of diblock copolymer micelles within individual ring at the nanometer scale). Intriguingly, hierarchical rings of diblock copolymer micelles comprising gold precursors or fluorescent dyes can also be crafted using this strategy. Upon exposure to hydrophilic block-selective solvent, core-corona inversion of micelles within the microscopic rings occurs. In contrast, such inversion is inhibited when the micelles are impregnated by gold precursors. This simple yet effective strategy for engineering diblock copolymer micelles may be extended to produce hierarchically assembled structures consisting of other functional block copolymers (e.g., stimuli-responsive block copolymer) and nanocrystals (e.g., semiconducting, magnetic, ferroelectric, etc.) with unique catalytic, magnetic, ferroelectric, optical, electronic, and optoelectronic properties.

中文翻译:

一种简单的双嵌段共聚物胶束分层环的方法。

通过利用两个同时发生的不同规模的自组装过程,精致地生产了由两亲性二嵌段共聚物胶束组成的分层组装项链(即,“嵌段图”策略是在潮湿空气中蒸发二嵌段共聚物胶束溶液以产生微观规模的环)。与二嵌段共聚物胶束在纳米级的单个环内的自组装结合在一起)。有趣的是,也可以使用该策略制备包含金前体或荧光染料的二嵌段共聚物胶束的分级环。暴露于亲水性嵌段选择性溶剂后,微观环内的胶束会发生核电晕转化。相反,当胶束被金前体浸渍时,这种反转被抑制。
更新日期:2019-11-29
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