Method to synthesize nanoparticle supercrystals

DWPI Title: Synthesis of nanoparticle supercrystals used in e.g. optical applications, involves counter diffusing colloidal suspension of ligand-capped nanoparticles in non-polar solvent with polar anti-solvent, and slowly precipitating supercrystals
Abstract: Highly ordered arrays of 3D faceted nanoparticle supercrystals are formed by self-assembly with controlled nanoparticle packing and unique facet dependent optical property by using a binary solvent diffusion method. The binary diffusion results in supercrystals whose size and quality are determined by initial nanoparticle concentration and diffusion speed. The supercrystal solids display unique facet-dependent surface plasmonic and surface-enhanced Raman characteristics. The supercrystals have potential applications in areas such as optics, electronics, and sensor platforms.
Use: Synthesis of nanoparticle supercrystals used in optical applications, electronic applications and sensor platforms.
Advantage: The method enables formation of highly ordered arrays of three-dimensional faceted nanoparticle supercrystals with controlled nanoparticle packing and unique facet dependent optical property.
Novelty: Synthesis of nanoparticle supercrystals involves providing a colloidal suspension of ligand-capped nanoparticles in a non-polar solvent, and counter-diffusing the non-polar solvent and the polar anti-solvent into each other, and slowly precipitating nanoparticle supercrystals from the colloidal suspension.
Filed: 1/15/2019
Application Number: US16247747A
Tech ID: SD 14801.0
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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