文献类型：期刊文献

英文题名：Fusion Growth of Two-Dimensional Disklike Micelles via Liquid-Crystallization-Driven Self-Assembly

作者：Jin, Xiao[1];Zhang, Chengyan[1];Lin, Jiaping[1];Cai, Chunhua[1];Chen, Jianding[1];Gao, Liang[1]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Mat Sci & Engn,Minist Educ, Shanghai Key Lab Adv Polymer Mat,Key Lab Ultrafin, Shanghai 200237, Peoples R China

年份：2022

卷号：55

期号：10

起止页码：3831

外文期刊名：MACROMOLECULES

收录：;EI(收录号：20222012119690);WOS:【SCI-EXPANDED(收录号:WOS:000804557800007)】；

基金：This work was supported by the National Natural Science Foundation of China (51621002, 22103025, 51833003, and 21975073), China Postdoctoral Science Foundation (2020M671019), and Shanghai Sailing Program (20YF1410700). This work was performed with the support of the Shanghai Synchrotron Radiation Facility, Beamline BL16B1 (2019-SSRF-PT-011602).

语种：英文

外文关键词：Aggregates - Block copolymers - Growth kinetics - Polyethylene glycols - Polyethylene oxides - Self assembly

摘要：Liquid-crystallization-driven self-assembly (LCDSA) is an emerging strategy for constructing nanoassemblies, such as 1D cylindrical micelles with LC-like micellar cores. However, it is still unknown whether LCDSA can be applied to higherdimensional self-assembly. Herein, we realize the growth of two-dimensional (2D) disklike micelles via LCDSA and reveal its mechanism. Disklike seeds are constructed through the self-assembly of poly(gamma-benzyl L-glutamate)-block-poly(ethylene glycol) (PBLG-b-PEG) block copolymers in solution. In the micellar core, the PBLG rod blocks take a smectic LC-like packing manner. After PBLG-b-PEG unimers are added into the seed solution, they first self-assemble into small aggregates. The aggregates then fuse with the seed edges to achieve the epitaxial growth of the disklike micelles. Brownian dynamic simulations reveal that the rod blocks in the small aggregates rearrange themselves to match the LC-like structure of the seed core in the growth process. The contour area of the disklike micelles is dependent on the unimer-to-seed ratio, and the 2D growth kinetics can be well controlled to construct concentric disklike micelles. The observed growth behavior of disklike micelles extends the LCDSA from 1D to 2D and can address the challenge of the precise manipulation of 2D nanostructures.