Spray-On Organic/Inorganic Films: A General Method for the Formation of Functional Nano- to Microscale Coatings



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Technicolor dreamcoat: Spray-on nanoscale coatings are formed by simultaneous spraying of complementary species (e.g., polyanion/polycation, polyelectrolyte/small oligomeric ion, two inorganic salt solutions) against a receiving surface (see picture). The process leads to the formation of ultrathin films, the thicknesses of which are controlled by the spraying time. This general one-step coating method results in optically homogeneous films from a broad choice of functional compounds.