Polymerization-Induced Self-Assembly Driven by the Synergistic Effects of Aromatic and Solvophobic Interactions,Macromolecules

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Polymerization-Induced Self-Assembly Driven by the Synergistic Effects of Aromatic and Solvophobic Interactions
Macromolecules ( IF 5.1 ) Pub Date : 2021-03-02 , DOI: 10.1021/acs.macromol.0c02882
Xiao-Fei Xu ₁ , Ren-Man Zhu ₁ , Cai-Yuan Pan ₁ , Ye-Zi You ₁ , Wen-Jian Zhang ₁ , Chun-Yan Hong ₁

Affiliation

Polymerization-induced self-assembly (PISA) has been established as an efficient method to fabricate polymeric vesicles. In most PISA cases, the formation of vesicles is solely driven by the solvophobic interactions. Besides solvophobic effects, many other noncovalent interactions can also drive/influence self-assembly of block copolymers. In this work, PISA driven by the synergistic effects of solvophobic and aromatic interactions is investigated. 7-(2-Methacryloyloxyethoxy)-4-methylcoumarin (CMA) is selected as a model monomer for RAFT dispersion polymerization to fabricate vesicles with both solvophobic and aromatic interactions existing in the membrane-forming blocks. Controlling vesicular size in the range of sub-100 nm to micrometer in PISA is realized by copolymerization of CMA with three different comonomers (aromatic or not) in various proportions to adjust the intermolecular interactions. Moreover, polymeric tubes with adjustable aspect ratios (from about 2 to 20) are produced by applying the cooperativity of aromatic and solvophobic interactions.

中文翻译：

芳香和疏溶剂相互作用的协同效应驱动聚合诱导的自组装

聚合诱导的自组装（PISA）已被确立为制造聚合物囊泡的一种有效方法。在大多数PISA病例中，囊泡的形成仅由疏溶剂相互作用驱动。除疏溶剂作用外，许多其他非共价相互作用也可以驱动/影响嵌段共聚物的自组装。在这项工作中，研究了由疏溶剂和芳族相互作用的协同作用驱动的PISA。选择7-（2-甲基丙烯酰氧基乙氧基）-4-甲基香豆素（CMA）作为RAFT分散聚合的模型单体，以制造在膜形成嵌段中同时存在疏溶剂和芳族相互作用的囊泡。通过使CMA与三种不同比例的三种不同共聚单体（芳香族或非芳香族）共聚以调节分子间相互作用，可以在PISA中控制小于100 nm到微米范围内的囊泡大小。而且，通过应用芳族和疏溶剂相互作用的协同作用，可以生产出具有可调节纵横比（约2至20）的聚合物管。

更新日期：2021-03-23

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