文献类型：期刊文献

英文题名：Liquid-Crystallization-Driven Self-Assembly toward Uniform Multi-Morphology Fried-Egg-Like Nanostructures

作者：Xia, Longgang[1];Zhu, Hao[1];Xu, Binbin[1];Duan, Chuyu[1];Huang, Xiaoyu[2,3];Lin, Shaoliang[1];Feng, Chun[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Macau Univ Sci & Technol, Fac Chinese Med, Taipa 999078, Macau Sar, Peoples R China;[3]Univ Chinese Acad Sci, Shanghai Inst Organ Chem, Ctr Excellence Mol Synth, Key Lab Synthet & Selfassembly Chem Organ Funct Mo, 345 Lingling Rd, Shanghai 200032, Peoples R China

年份：2025

卷号：31

期号：4

外文期刊名：CHEMISTRY-A EUROPEAN JOURNAL

收录：;EI(收录号：20244917471724);WOS:【SCI-EXPANDED(收录号:WOS:001366118600001)】；

基金：The authors are thankful for financial support from National Natural Science Foundation of China (52122314, U22A20131, 52173014, 52273008 and 52361165657), Strategic Priority Research Program of Chinese Academy of Sciences (XDB0590000), Shanghai Scientific and Technological Innovation Project (22ZR1479300, 22JC1401000 and 22ZR1475400), and Shanghai Rising-Star Program (23QA1402500). The authors thank Dr. Kun Cui for his assistance with TEM measurements.

语种：英文

外文关键词：Azobenzene; Copolymer; Liquid-crystallization-driven self-assembly; Micelle

摘要：Liquid-crystallization-driven self-assembly (LCDSA) has recently emerged as an efficient strategy to create uniform one-dimensional (1-D), 2-D and 3-D nanostructures in a controlled manner. However, the examples of generation of uniform multi-morphology nanostructures from solution self-assembly of one single polymer sample are rare. Herein, we report the first example of preparation of multi-morphology fried-egg-like nanostructures consisting of an inner spherical/bowl-like core of uniform size and platelets protruded from the core by LCDSA of PAMAM-Azo6 (PAMAM=polyamidoamine, Azo=azobenzene) in methanol. It is disclosed that the different aggregation rates for PAMAM-Azo6 with varying contents of Azo units spontaneously separated nucleation and growth stages, which led to the formation of inner spherical/bowl-like cores ("seeds") firstly, followed by the formation of platelets protruded from the edges of inner core to give "imperfect" fried-egg-like nanostructures. Additional annealing of initially formed "imperfect" fried-egg-like micelles will promote the rearrangement of Azo units to give thermodynamically-favored "perfect" fried-egg-shaped micelles with a uniform dimension both in the core and whole structure. This work not only provides an efficient strategy to create uniform multi-morphology fried-egg-shaped nanostructures, but also reveals the essential impact of aggregation kinetics of liquid-crystalline-coil BCPs in the formation of multi-morphology nanostructures.