应用化学2025，Vol.42Issue(8)：1087-1095,9.DOI:10.19894/j.issn.1000-0518.250113
多臂星形链拓扑结构对嵌段共聚物非平衡态自组装行为的影响
Effect from Miktoarm Star-Like Chain Architectures on Nonequilibrium Self-Assembly of Block Copolymers
摘要
Abstract
Block copolymers have the ability to form a variety of ordered mesostructures at the length scale of nanometers via spontaneous self-assembly.These ordered nanostructures have significant potential applications in many fields,e.g.,battery electrode materials,advanced semiconductor devices,three-dimensional(3D)photonic crystals,etc.,and therefore,they have attracted great attention in the field of high-performance material science.With the development of polymer synthesis technology,more and more chain architectures have been synthesized,such as miktoarm star-like chain architectures.Whereas the effect from the chain architectures on the equilibrium self-assembly of block copolymers is well known to researchers and has been widely employed to stabilize the desired ordered mesostructures of block copolymers,the influence of the chain architectures on the nonequilibrium self-assembly of block copolymers is currently rarely considered.In this work,based on the thermodynamically stable hex mesophase in miktoarm star-like ABm block copolymers,by designing miktoarm star-like A(CB)m block copolymers,where the chemophysical properties of C-blocks can be rapidly altered from B to A,to generate unstable states,we explore the nonequilibrium self-assembly ensuing from these unstable states as well as the effect from the number of C-blocks,i.e.,the value of m,and the chain length of each C-block.Our obtained results show that the more the value of m,the smaller the volume-fraction interval that is available for the nonequilibrium self-assembly ensuing from the generated unstable states to reach ordered mesostructures.For 2≤m≤4,in addition to hex,the ordered cylindrical mesostructure with graphene-like arrangement of cylinders also can be reached by the nonequilibrium self-assembly ensuing from the generated unstable states,however,when m=5,the ordered mesostructure that can be reached by the nonequilibrium self-assembly ensuing from the generated unstable states is only hex.关键词
嵌段共聚物/链拓扑结构/非平衡态自组装行为/快速组分变化/柱状有序结构Key words
Block copolymer/Chain architecture/Nonequilibrium self-assembly/Rapid-component change/Cylindrical mesostructure分类
化学化工引用本文复制引用
杨晓,孙德文..多臂星形链拓扑结构对嵌段共聚物非平衡态自组装行为的影响[J].应用化学,2025,42(8):1087-1095,9.基金项目
吉林省自然科学基金(No.20240101173JC)和国家自然科学基金(Nos.21973090,22373029)资助 Supported by the Science and Technology Development Program of Jilin Province(No.20240101173JC)and the National Natural Science Foundation of China(Nos.21973090,22373029) （No.20240101173JC）
