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Pathway-engineered Co-assembly of nanorod-nanosphere binary superlattices
Di Lei1, Hao Wang1, Ziyue Zheng1
1State Key Laboratory of Porous Materials for Separation and Conversion, Department of Chemistry, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, China. weilichem@fudan.edu.cn.
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We demonstrate that nanorod-nanosphere co-assembly can be achieved by selectively suppressing competing assembly pathways via tuning the nanosphere-to-nanorod number ratio. Increasing nanosphere content disrupts nanorod-nanorod aggregation and enables the formation of AB6-p2, AB-pmm superlattices and quasi two-dimensional (Quasi-2D) structures. A pathway selection map reveals a narrow window governed by size and number ratios, establishing pathway regulation as a general strategy for binary nanocrystal assembly.
