writer：Nan Yan, Hongxia Liu, Yutian Zhu, Wei Jiang, Zeyuan Dong
keywords：金纳米粒子, 嵌段共聚物, 三维受限, 熵驱动, 分级纳米结构, Janus纳米粒子
source：期刊
specific source：Macromolecules, 2015, 48(16), 5980-5987
Issue time：2015年

摘要：通过实验与Monte Carlo模拟相结合，研究了聚苯乙烯-b-聚4-乙烯基吡啶嵌段共聚物（BCPs）与金纳米粒子（AuNPs）在乳液液滴内的三维受限协同自组装。结果表明，AuNPs与BCP畴之间的熵相互作用是控制AuNPs空间排列和杂化纳米粒子纳米结构的关键参数，可用于设计新型分级杂化纳米粒子。基于这一理论认识，通过三维受限自组装制备了大量独特的Janus杂化纳米粒子，包括AuNPs集中于一端的蛹状纳米粒子、AuNPs富集于球面凸起中的球形纳米粒子，以及由小型杂化Janus纳米粒子进一步分级组装形成的葫芦状、三叶草状和四叶草状纳米粒子。

Abstract：The cooperative self-assembly of polystyrene-b-poly(4-vinylpyridine) block copolymers (BCPs) and gold nanoparticles (AuNPs) confined within emulsion droplets is studied by combining both experiments and Monte Carlo simulations. The results indicate that the entropic interaction between the AuNPs and the BCP domain is a critical parameter dominating the spatial arrangement of AuNPs and the nanostructure of the hybrid nanoparticles, which can be utilized to design novel hierarchical hybrid nanoparticles. Based on this theoretical observation, a large number of unique Janus hybrid nanoparticles, including pupa-like nanoparticles with AuNPs concentrated at one pole of the particles, spherical nanoparticles with AuNPs enriched in a bulge on the sphere surface, and gourd-like, clover-like, and four-leaf-clover-like nanoparticles from the further hierarchical assembly of small hybrid Janus nanoparticles, are fabricated via three-dimensional confined self-assembly.

论文链接：https://doi.org/10.1021/acs.macromol.5b01219