Journal
NATURE MATERIALS
Volume 16, Issue 6, Pages 652-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NMAT4869
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Funding
- US Army Research Office under MURI Grant [W911NF-10-1-0518]
- NRF (Korea) [2010-0029409, 2014S1A2A2028608, 2014R1A2A2A01006628]
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Self-assembly is a powerful approach for constructing colloidal crystals, where spheres, rods or faceted particles can build up a myriad of structures. Nevertheless, many complex or low-coordination architectures, such as diamond, pyrochlore and other sought-after lattices, have eluded self-assembly. Here we introduce a new design principle based on preassembled components of the desired superstructure and programmed nearest-neighbour DNA-mediated interactions, which allows the formation of otherwise unattainable structures. We demonstrate the approach using preassembled colloidal tetrahedra and spheres, obtaining a class of colloidal superstructures, including cubic and tetragonal colloidal crystals, with no known atomic analogues, as well as percolating low-coordination diamond and pyrochlore sublattices never assembled before.
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