Modulating Orientational Order to Organize Polyhedral Nanoparticles into Plastic Crystals and Uniform Metacrystals.,Angewandte Chemie International Edition

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Modulating Orientational Order to Organize Polyhedral Nanoparticles into Plastic Crystals and Uniform Metacrystals.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-08-07 , DOI: 10.1002/anie.202009941
Yih Hong Lee ₁ , Wenxiong Shi ₂ , Yijie Yang ₁ , Ya-Chuan Kao ₁ , Hiang Kwee Lee ₁ , Rongrong Chu ₂ , Yee Ling Pang ₁ , Chee Leng Lay _{1,

3} , Shuzhou Li ₄ , Xing Yi Ling ₁

Affiliation

In nanoparticle self‐assembly, the current lack of strategy to modulate orientational order creates challenges in isolating large‐area plastic crystals. Here, we achieve two orientationally distinct supercrystals using one nanoparticle shape, including plastic crystals and uniform metacrystals. Our approach integrates multi‐faceted Archimedean polyhedra with molecular‐level surface polymeric interactions to tune nanoparticle orientational order during self‐assembly. Experiments and simulations show that coiled surface polymer chains limit interparticle interactions, creating various geometrical configurations among Archimedean polyhedra to form plastic crystals. In contrast, brush‐like polymer chains enable molecular interdigitation between neighboring particles, favoring consistent particle configurations and result in uniform metacrystals. Our strategy enhances supercrystal diversity for polyhedra comprising multiple nondegenerate facets.

中文翻译：

调节取向顺序以将多面体纳米颗粒组织成塑料晶体和均匀的超晶。

在纳米粒子自组装中，当前缺乏调节取向顺序的策略给隔离大面积塑料晶体带来了挑战。在这里，我们使用一个纳米粒子形状实现了两个方向不同的超晶，包括塑料晶体和均匀的超晶。我们的方法将多面的阿基米德多面体与分子水平的表面聚合物相互作用相结合，以调节自组装过程中纳米粒子的取向顺序。实验和模拟表明，盘绕的表面聚合物链限制了颗粒间的相互作用，从而在阿基米德多面体之间创建了各种几何构型，从而形成了塑料晶体。相反，类似刷子的聚合物链可以使相邻颗粒之间发生分子相互交叉，从而有利于保持一致的颗粒构型并产生均匀的亚晶体。

更新日期：2020-08-07

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