3D confined self-assembly (3D-CSA) of block copolymer (BCP) is a significant way to generate polymer microparticles with ordered internal suprastructures. Subsequent selective disassembly of the suprastructures can lead to the formation of unique anisotropic micelles or mesoporous microparticles, which can be hardly achieved by solution self-assembly or disassembly of bulk suprastructures. These micelles or mesoporous microparticles and their composites with functional molecules/nanoparticles have great potential in interfacial compatibilization, catalysis, controlled drug delivery and other fields, thus arising increasing attention in recent years. In this review, we first briefly discuss the influence factors, particularly, packing parameter and interfacial selectivity on morphology of BCP assemblies under 3D confinement. Then, we emphasize recent progress in selective disassembly of BCP microparticles into anisotropic micelles or mesoporous microparticles and derived composites. Finally, the outlook and challenges of this direction are highlighted.

中文翻译：

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3D受限自组装与选择性拆卸相结合的嵌段共聚物超分子结构设计


嵌段共聚物（BCP）的3D受限自组装（3D-CSA）是生成具有有序内部超结构的聚合物微粒的重要方法。随后的上部结构的选择性分解可以导致独特的各向异性胶束或介孔微粒的形成，这是通过溶液自组装或块状上部结构的分解很难实现的。这些胶束或介孔微粒及其与功能分子/纳米颗粒的复合物在界面增容、催化、药物控释等领域具有巨大的潜力，近年来受到越来越多的关注。在这篇综述中，我们首先简要讨论了影响因素，特别是堆积参数和界面选择性对 3D 约束下 BCP 组件形态的影响。然后，我们强调了 BCP 微粒选择性分解成各向异性胶束或介孔微粒及其衍生复合材料的最新进展。最后强调了该方向的前景和挑战。