In recent decades, there has been a growing interest in block copolymer with broad dispersity. Previous studies showed that increasing polydispersity influences the self-assembly behavior of block copolymers; however, disagreements between experimental and computational studies remained on key issues including the extent of domain swelling with increasing block dispersity and the effects of polydispersity on order–disorder and order–order transitions in block copolymers. Furthermore, while polydispersity stabilized complex microdomain morphologies and macrophase separation were suggested by a number of computational reports, experimental evidences on the topic were rare. Building on these earlier studies, new advances have been made on the synthesis and characterization of polydisperse block copolymers. These recent studies resolve the existing controversies in the field and bring new insights on polydisperse block copolymer phase behavior. Here, we highlight studies on polydisperse block copolymers published in the past ten years.

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多分散性对嵌段共聚物相行为影响的最新进展

在最近的几十年中，人们对具有广泛分散性的嵌段共聚物越来越感兴趣。先前的研究表明，多分散性的提高会影响嵌段共聚物的自组装行为。然而，实验研究和计算研究之间在关键问题上仍存在分歧，包括随着嵌段分散度的增加，区域膨胀的程度以及嵌段共聚物中多分散度对有序-无序和有序-有序转变的影响。此外，尽管许多计算报告都提出了多分散性稳定的复杂微区形态和宏观相分离的建议，但有关该主题的实验证据很少。在这些早期研究的基础上，在多分散嵌段共聚物的合成和表征方面取得了新的进展。这些最新的研究解决了该领域中存在的争议，并为多分散嵌段共聚物的相行为提供了新的见解。在这里，我们重点介绍过去十年中发表的有关多分散嵌段共聚物的研究。