Single‐Step Self‐Organization of Ordered Macroporous Nanocrystal Thin Films

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Abstract
Spatially organized macroporous thin films made of close‐packed nanocrystals (see Figure) can be formed using a single‐step dispersion evaporation technique. Water condensation is induced, in which droplet coalescence is prevented by interfacially active nanocrystals, allowing close‐packed arrays of monodisperse water droplets to form. The hydrophobic nanocrystals then mold themselves around the water droplet template, leading to highly ordered porous nanocrystal films.