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A Versatile Bottom-up Assembly Approach to Colloidal Spheres from Nanocrystals

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  • This work was supported by the NSFC (90606006) and the State Key Project of Fundamental Research (2006CB932300.

Abstract

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Well-rounded: Water-dispersed colloidal spheres that are self-assembled from nanocrystals with different size, shape, composition, and surface ligand were prepared through a versatile emulsion-based self-assembly (EBS) approach. Through this emulsification process, a dispersion of BaCrO4 nanocrystals in cyclohexane (see picture, left) can be transformed into a dispersion of colloidal spheres of BaCrO4 (see picture, right).

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