Control the Self-assembly of Block Copolymers by Tailoring the Packing Frustration  

作　　者：Zhanwen Xu Weihua Li 

机构地区：[1]State Key Laboratory of Molecular Engineering of Polymers,Key Laboratory of Computational Physical Sciences,Department of MacromolecularScience,Fudan University,Shanghai 200433,China

出　　处：《Chinese Journal of Chemistry》2022年第9期1083-1090,共8页中国化学（英文版）

基　　金：We thank the National Natural Science Foundation of China(Nos.21925301 and 22103016).

摘　　要：The concept of"packing frustration"has been used to understand the self-assembly behaviors of block copolymers for decades.However,rare attention has been paid to tailoring the packing frustration.This account provides a review of our recent endeavor of controlling the self-assembly of block copolymers via tailoring the packing frustration.The basic idea is to release the packing frustration of chains through the local segregation between different blocks of the same component filing different spaces of near and far.Two different majority blocks are designed to release their packing frustration in the matrix.In particular,this effect of released packing frustration has been successfullycombined with other effectss such as the stretched bridging block to stabilize many unusual low.coordinated phases.We have also proposed to release the packing frustration of minority blocks within the interface curva-ture by designing the architectures of minority blocks.The effect of released packing frustration of minority blocks is aplied to drastically expand the region of spherical phases and thus to obtain significant regions of complex Frank Kasper phases.In brief,the self.assembly of block copolymers can be largely contrlled by tailoring the packing frustration of blocks,even leading to the formation of many unusual ordered phases.

关 键 词：Block copolymers SELF-ASSEMBLY Packing frustration Molecular designing NANOSTRUCTURES 

分 类 号：O63[理学—高分子化学]