We report supracolloidal self‐assembly of atomically precise and strictly monodisperse gold nanoclusters involving p ‐mercaptobenzoic acid ligands (Au 102 ‐ p MBA 44 ) under aqueous conditions into hexagonally packed monolayer‐thick two‐dimensional facetted colloidal crystals (thickness 2.7 nm) and their bending to closed shells leading to spherical capsids ( d ca. 200 nm), as controlled by solvent conditions. The 2D colloidal assembly is driven in template‐free manner by the spontaneous patchiness of the p MBA ligands around the Au 102 ‐ p MBA 44 nanoclusters preferably towards equatorial plane, thus promoting inter‐nanocluster hydrogen bonds and high packing to planar sheets. More generally, the findings encourage to explore atomically precise nanoclusters towards highly controlled colloidal self‐assemblies.
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Nonappa et al. (2016) studied this question.
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