Journal
SCIENCE
Volume 358, Issue 6362, Pages 514-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aan6046
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Funding
- European Research Council [336080 CONFINEDCHEM, 335078 COLOURATOM]
- Rothschild Caesarea Foundation
- NSF (Division of Materials Research) [1506886]
- European Commission [EUSMI 731019]
- University of Texas at El Paso
- Spanish Ministerio de Economia y Competitividad [MAT2013-46101-R]
- Research Foundation Flanders (FWO, Belgium)
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1506886] Funding Source: National Science Foundation
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Self-assembly of inorganic nanoparticles has been used to prepare hundreds of different colloidal crystals, but almost invariably with the restriction that the particles must be densely packed. Here, we show that non-close-packed nanoparticle arrays can be fabricated through the selective removal of one of two components comprising binary nanoparticle superlattices. First, a variety of binary nanoparticle superlattices were prepared at the liquid-air interface, including several arrangements that were previously unknown. Molecular dynamics simulations revealed the particular role of the liquid in templating the formation of superlattices not achievable through self-assembly in bulk solution. Second, upon stabilization, all of these binary superlattices could be transformed into distinct nanoallotropes-nanoporous materials having the same chemical composition but differing in their nanoscale architectures.
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