Assembly of nanoparticles (NPs) into complex architectures across length scales is of paramount importance in nanoscience and nanotechnology, especially for various applications. Despite the major advances, NP assembly has not achieved atomic-level understanding yet. Recent progress in nanochemistry has led to atomically precise nanoparticles (e.g. gold) with their total structures (i.e., metal core plus surface ligands) fully determined by X-ray crystallography. Such unique nanoparticles provide an opportunity for undersanding NP assembly mechanisms at unprecedented levels. This talk will present several case studies. The precise structural information across the Ångström to macro scale reveals that the protecting ligands can generate complex patterns on the NP surface, and that the symmetry and density of the surface patterns further guide the packing of NPs into lattices with orientational, rotational, and translational order.<br/>

Atomically precise metal nanoparticles and their assembly

256th National Meeting (2018)

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