Colloidal Binary Supracrystals with Tunable Structural Lattices,Journal of the American Chemical Society

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Colloidal Binary Supracrystals with Tunable Structural Lattices
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-07-10 , DOI: 10.1021/jacs.8b05643
Peng-peng Wang ₁ , Qiao Qiao _{2,

3} , Yimei Zhu ₂ , Min Ouyang ₁

Affiliation

Colloidal binary supracrystals (SCs) possessing tunable and ordered assembly of two different types of functional nanoparticles (NPs) represent a unique class of artificial materials for both fundamental study and technological applications, but related study has been limited due to substantial challenges in materials growth. Here we report the controlled growth of colloidal binary SCs consisting of Au and Fe3O4 NPs via an oil-in-water emulsion process. The size, stoichiometry, and lattice structure of the SCs can be broadly tuned by the growth parameters. Furthermore, our growth method is general and applicable to other NP building blocks to achieve various functional binary SCs. These as-grown free-standing binary SCs should therefore enable new test beds for exploring different nanoscale interactions ranging from the formation and stability of nanoscale binary phase to the emerging magneto-plasmonic coupling physics.

中文翻译：

具有可调结构晶格的胶体二元超晶体

具有两种不同类型功能纳米粒子 (NPs) 的可调和有序组装的胶体二元超晶体 (SCs) 代表了一类独特的人工材料，可用于基础研究和技术应用，但由于材料生长的巨大挑战，相关研究受到限制。在这里，我们报告了通过水包油乳液工艺控制由 Au 和 Fe3O4 NPs 组成的胶体二元 SCs 的生长。SCs 的尺寸、化学计量和晶格结构可以通过生长参数进行广泛调整。此外，我们的增长方法是通用的，适用于其他 NP 构建块，以实现各种功能的二元 SC。

更新日期：2018-07-10

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