Jarrett-Wilkins Charles N, Pearce Samuel, MacFarlane Liam R, Davis Sean A, Faul Charl F J, Manners Ian
School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, United Kingdom.
Department of Chemistry, University of Victoria, Victoria, British Columbia V8W 3 V6, Canada.
ACS Macro Lett. 2020 Nov 17;9(11):1514-1520. doi: 10.1021/acsmacrolett.0c00612. Epub 2020 Oct 13.
The formation of colloids with anisotropically patterned surfaces is of growing interest for the creation of hierarchical structures and the templating of nanoparticles. We have recently shown that well-defined two-dimensional platelets with low areal dispersities can be formed by the seeded growth of a blend of homopolymers and block copolymers. Herein we form rectangular platelets containing two block copolymers with different coronal chemistries. On addition of a solvent that is only able to solvate the corona of one block, we were able to form colloidally stable micelles with patterned surfaces via coronal collapse. Scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy and atomic force microscopy were employed to provide information on the structure and size of the patches decorating the micelle surfaces.
具有各向异性图案化表面的胶体的形成对于构建分级结构和纳米颗粒的模板化越来越受到关注。我们最近表明，通过均聚物和嵌段共聚物混合物的种子生长可以形成具有低面分散性的明确二维薄片。在此，我们形成了包含两种具有不同冠状化学组成的嵌段共聚物的矩形薄片。在加入仅能溶剂化一个嵌段的冠状部分的溶剂后，我们能够通过冠状塌陷形成具有图案化表面的胶体稳定胶束。利用扫描透射电子显微镜-能量色散X射线光谱和原子力显微镜来提供有关装饰胶束表面的斑块的结构和尺寸的信息。
