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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 129, Issue 46, Pages 14166-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja076494i
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In this paper, we report an approach for using solvophobic interactions to synthesize well-defined colloidal superparticles from nonpolar-solvent-dispersible Fe3O4 nanoparticle artificial atoms. These colloidal superparticles possess a '' single-supercrystal '' structure, of which Fe3O4 artificial atoms occupy the lattice points of a face-centered cubic superlattice. In addition, these superparticles exhibit superlattice fringes under a low-resolution TEM, providing an interesting analogue to the lattice fringes of colloidal nanocrystals under a high-resolution TEM. Moreover, these superparticles can be further assembled into close-packed solid structures, demonstrating their role as a new type of building block in nanoscience.
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