A very large two-dimensional superlattice domain of monodisperse gold nanoparticles by self-assembly

Abstract

We report a very large 2D superlattice domain of hexagonal close-packed monodisperse gold nanoparticles, which is longer than 20 μm and of 8.8 nm superlattice constant in a millimetre-scale monolayer film, fabricated by simple self-assembly of drying water and toluene droplets with 2D nanoparticles at the air–liquid interfaces.