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  Superstructures generated from truncated tetrahedral quantum dots

Nagaoka, Y., Tan, R., Li, R., Zhu, H., Eggert, D., Wu, Y. A., et al. (2018). Superstructures generated from truncated tetrahedral quantum dots. Nature, 561(7723), 378-393. doi:10.1038/s41586-018-0512-5.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-4A9E-A Version Permalink: http://hdl.handle.net/21.11116/0000-0006-D37E-F
Genre: Journal Article

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Supplementary Information (pdf): This file contains Supplementary Methods, a Supplementary Discussion, Supplementary Figures 1-36, Supplementary Tables 1-17, legends for the Supplementary Videos and Supplementary References. | Video 1 (mp4): SAXS patterns of the bcc-supercrystal from rotational SAXS measurements along the [110]bcc axis with a step angle of 1º. | Video 2 (mp4): WAXS patterns of the bcc-supercrystal from rotational WAXS measurements along the [110]bcc axis with a step angle of 1º.
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https://dx.doi.org/10.1038/s41586-018-0512-5 (Publisher version)
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 Creators:
Nagaoka, Y.1, Author
Tan, R.1, Author
Li, R.2, Author
Zhu, H.1, Author
Eggert, D.3, 4, Author              
Wu, Y. A.5, Author
Liu, Y.5, Author
Wang, Z.2, Author
Chen, O.1, Author
Affiliations:
1Department of Chemistry, Brown University, Providence, ou_persistent22              
2Cornell High Energy Synchrotron Source, Cornell University, ou_persistent22              
3Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
4Heinrich Pette Institute, Leibniz Institute for Experimental Virology, ou_persistent22              
5Center for Nanoscale Materials, Argonne National Laboratory, ou_persistent22              

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 Abstract: he assembly of uniform nanocrystal building blocks into well ordered superstructures is a fundamental strategy for the generation of meso- and macroscale metamaterials with emergent nanoscopic functionalities1,2,3,4,5,6,7,8,9,10. The packing of spherical nanocrystals, which frequently adopt dense, face-centred-cubic or hexagonal-close-packed arrangements at thermodynamic equilibrium, has been much more widely studied than that of non-spherical, polyhedral nanocrystals, despite the fact that the latter have intriguing anisotropic properties resulting from the shapes of the building blocks11,12,13. Here we report the packing of truncated tetrahedral quantum dot nanocrystals into three distinct superstructures—one-dimensional chiral tetrahelices, two-dimensional quasicrystal-approximant superlattices and three-dimensional cluster-based body-centred-cubic single supercrystals—by controlling the assembly conditions. Using techniques in real and reciprocal spaces, we successfully characterized the superstructures from their nanocrystal translational orderings down to the atomic-orientation alignments of individual quantum dots. Our packing models showed that formation of the nanocrystal superstructures is dominated by the selective facet-to-facet contact induced by the anisotropic patchiness of the tetrahedra. This study provides information about the packing of non-spherical nanocrystals into complex superstructures, and may enhance the potential of self-assembled nanocrystal metamaterials in practical applications.

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Language(s): eng - English
 Dates: 2017-10-182018-08-072018-09-192018-09-20
 Publication Status: Published in print
 Pages: 16
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/s41586-018-0512-5
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Title: Nature
  Abbreviation : Nature
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: 16 Volume / Issue: 561 (7723) Sequence Number: - Start / End Page: 378 - 393 Identifier: ISSN: 0028-0836
CoNE: https://pure.mpg.de/cone/journals/resource/954925427238