Structural Difference in the Core-forming Block Reshapes RAFT-mediated Polymerization-induced Self-assembly

作     者：Yue-Xi Zhan Li Zhang Chun Feng Jian-Bo Tan 

作者机构：Department of Polymeric Materials and EngineeringSchool of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Functional Soft Condensed MatterGuangzhou 510006China Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学(英文版))

年 卷 期：2025年第43卷第3期

页      面：429-438页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22171055 and 52222301) the Guangdong Natural Science Foundation for Distinguished Young Scholar(No.2022B1515020078) the Science and Technology Program of Guangzhou(No.2024A04J2821) 

主　　题：Polymerization-induced self-assembly RAFT polymerization Block copolymer nanoparticles Branched structure 

摘      要：Polymerization-induced self-assembly(PISA)has become one of the most versatile approaches for scalable preparation of linear block copolymer nanoparticles with various ***,the controlled introduction of branching into the core-forming block and the effect on the morphologies of block copolymer nanoparticles under PISA conditions have rarely been ***,a series of multifunctional macromolecular chain transfer agents(macro-CTAs)were first synthesized by a two-step green light-activated photoiniferter polymerization using two types of chain transfer monomers(CTMs).These macro-CTAs were then used to mediate reversible addition-fragmentation chain transfer(RAFT)dispersion polymerization of styrene(St)to prepare block copolymers with different core-forming block structures and the *** effect of the core-forming block structure on the morphology of block copolymer nanoparticles was investigated in *** electron microscopy(TEM)analysis indicated that the brush-like core-forming block structure facilitated the formation of higher-order morphologies,while the branched core-forming block structure favored the formation of lower-order ***,it was found that using macroCTAs with a shorter length also promoted the formation of higher-order ***,structures of block copolymers and the assemblies were further controlled by changing the structure of macro-CTA or using a binary mixture of two different *** expect that this work not only sheds light on the synthesis of block copolymer nanoparticles but also provide important mechanistic insights into PISA of nonlinear block copolymers.