The assembly of the surfactants has been utilized as unique templates for the controlled synthesis of metal nanosheets.However,current strategies for metal nanosheets have mainly focused on the liquid-phase surfactant assembly.Herein,we found the solid-state surfactants as designable crystals suitable for nanostructural control and proposed a novel synthetic route for molecularly thin Pt metal nanosheets using solid surfactant crystals as a precursor.The 2D surfactant crystals containing planarly arranged Pt complexes were prepared,and the subsequent UV-ozone treatment and reduction process allowed us to obtain Pt metal nanosheets.Pt metal nanosheets had a distinct morphology with various thicknesses(from 1.5 nm to 3.0 nm),characteristic of 2D surfactant crystals.
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