Application of self-consistent field theory to block copolymer self-assembly
主 题: Application of self-consistent field theory to block copolymer self-assembly
报告人: Weihua Li (复旦大学)
时 间: 2015-07-21 15:30-16:30
地 点: 理科1号楼1418教室
Self-consistent field theory (SCFT) has become one of the most successful methods in the study of block copolymer self-assembly. As the complexity of molecular architectures increases, block copolymers can self-assemble into more and more interesting ordered nanostructures. As a consequence, it becomes more and more challengeable for SCFT to explore the vast variety of morphologies. We have developed an initialization method by utilizing strong-segregation approximation that enables SCFT to find the solutions of desired morphologies. Self-assemblies of a number of specially designed block copolymers are discussed, including ABC linear triblock copolymer forming helical supercylindrical phases, AB-type block copolymers forming various spherical phases (such as bcc, A15, and σ phases), and BABCB linear multiblock terpolymer for the formation of binary crystalline phases. Based on the knowledge of self-assemblies of these block copolymers, we have proposed a new concept of designing molecular architectures of block copolymers for desired structures.