Solvent-Mediated Self-Assembly of Nanocube Superlattices

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• 作者：Zewei Quan ; Hongwu Xu ; Chenyu Wang ; Xiaodong Wen ; Yuxuan Wang ; Jinlong Zhu ; Ruipeng Li ; Chris J. Sheehan ; Zhongwu Wang ; Detlef-M. Smilgies ; Zhiping Luo ; Jiye Fang
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：January 29, 2014
• 年：2014
• 卷：136
• 期：4
• 页码：1352-1359
• 全文大小：631K
• ISSN：1520-5126

文摘

Self-organization of colloidal Pt nanocubes into two types of distinct ordered superlattices, simple-cubic and body-centered-tetragonal structures, has been achieved using a home-built setup. Detailed translational and orientational characteristics of these superstructures were determined using a transmission electron microscopy tomographic technique with 3D reconstruction analysis. The formation of these distinct superlattices is the result of a delicate choice of solvent (i.e., aliphatic hexane or aromatic toluene hydrocarbons), which serves as a dispersion medium to fine-tune the relative strengths of ligand鈥搇igand and ligand鈥搒olvent interactions during the self-assembly process. This work provides important insights into the effects of ligand鈥搒olvent interactions on superlattice formation from nonspherical nanoparticles.