Zhao Zaiwang, Zhao Yujuan, Lin Runfeng, Ma Yuzhu, Wang Lipeng, Liu Liangliang, Lan Kun, Zhang Jie, Chen Hanxing, Liu Mengli, Bu Fanxing, Zhang Pengfei, Peng Liang, Zhang Xingmiao, Liu Yupu, Hung Chin-Te, Dong Angang, Li Wei, Zhao Dongyuan
Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM and State Key Laboratory of Molecular Engineering of Polymers, College of Chemistry and Materials, Fudan University, Shanghai 200433, P. R. China.
Centre for High-Resolution Electron Microscopy (CћEM), School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai 201210, P. R. China.
Sci Adv. 2022 May 13;8(19):eabo0283. doi: 10.1126/sciadv.abo0283.
Manipulating the super-assembly of polymeric building blocks still remains a great challenge due to their thermodynamic instability. Here, we report on a type of three-dimensional hierarchical core-satellite SiO@monomicelle spherical superstructures via a previously unexplored monomicelle interfacial super-assembly route. Notably, in this superstructure, an ultrathin single layer of monomicelle subunits (~18 nm) appears in a typically hexagon-like regular discontinuous distribution (adjacent micelle distance of ~30 nm) on solid spherical interfaces (SiO), which is difficult to achieve by conventional super-assembled methods. Besides, the number of the monomicelles on colloidal SiO interfaces can be quantitatively controlled (from 76 to 180). This quantitative control can be precisely manipulated by tuning the interparticle electrostatic interactions (the intermicellar electrostatic repulsion and electrostatic attractions between the monomicelle units and the SiO substrate). This monomicelle interfacial super-assembly strategy will enable a controllable way for building multiscale hierarchical regular micro- and/or macroscale materials and devices.
由于其热力学不稳定性，操纵聚合物构建块的超组装仍然是一个巨大的挑战。在此，我们报道了一种通过前所未有的单胶束界面超组装途径形成的三维分级核-卫星SiO@单胶束球形超结构。值得注意的是，在这种超结构中，超薄的单层单胶束亚基（约18纳米）以典型的六边形规则不连续分布（相邻胶束距离约30纳米）出现在固体球形界面（SiO）上，这是传统超组装方法难以实现的。此外，胶体SiO界面上的单胶束数量可以定量控制（从76个到180个）。这种定量控制可以通过调节粒子间静电相互作用（单胶束单元与SiO底物之间的胶束间静电排斥和静电吸引）来精确操纵。这种单胶束界面超组装策略将为构建多尺度分级规则的微尺度和/或宏观尺度材料及器件提供一种可控方法。
