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Shape-dependent ordering of gold nanocrystals into large-scale superlattices

Self-assembly of individual building blocks into highly ordered structures, analogous to spontaneous growth of crystals from atoms, is a promising approach to realize the collective properties of nanocrystals. Yet the ability to reliably produce macroscopic assemblies is unavailable and key factors...

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Detalles Bibliográficos
Autores principales: Gong, Jianxiao, Newman, Richmond S., Engel, Michael, Zhao, Man, Bian, Fenggang, Glotzer, Sharon C., Tang, Zhiyong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5253678/
https://www.ncbi.nlm.nih.gov/pubmed/28102198
http://dx.doi.org/10.1038/ncomms14038
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author Gong, Jianxiao
Newman, Richmond S.
Engel, Michael
Zhao, Man
Bian, Fenggang
Glotzer, Sharon C.
Tang, Zhiyong
author_facet Gong, Jianxiao
Newman, Richmond S.
Engel, Michael
Zhao, Man
Bian, Fenggang
Glotzer, Sharon C.
Tang, Zhiyong
author_sort Gong, Jianxiao
collection PubMed
description Self-assembly of individual building blocks into highly ordered structures, analogous to spontaneous growth of crystals from atoms, is a promising approach to realize the collective properties of nanocrystals. Yet the ability to reliably produce macroscopic assemblies is unavailable and key factors determining assembly quality/yield are not understood. Here we report the formation of highly ordered superlattice films, with single crystalline domains of up to half a millimetre in two dimensions and thickness of up to several microns from nanocrystals with tens of nanometres in diameter. Combining experimental and computational results for gold nanocrystals in the shapes of spheres, cubes, octahedra and rhombic dodecahedra, we investigate the entire self-assembly process from disordered suspensions to large-scale ordered superlattices induced by nanocrystal sedimentation and eventual solvent evaporation. Our findings reveal that the ultimate coherence length of superlattices strongly depends on nanocrystal shape. Factors inhibiting the formation of high-quality large-scale superlattices are explored in detail.
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spelling pubmed-52536782017-02-03 Shape-dependent ordering of gold nanocrystals into large-scale superlattices Gong, Jianxiao Newman, Richmond S. Engel, Michael Zhao, Man Bian, Fenggang Glotzer, Sharon C. Tang, Zhiyong Nat Commun Article Self-assembly of individual building blocks into highly ordered structures, analogous to spontaneous growth of crystals from atoms, is a promising approach to realize the collective properties of nanocrystals. Yet the ability to reliably produce macroscopic assemblies is unavailable and key factors determining assembly quality/yield are not understood. Here we report the formation of highly ordered superlattice films, with single crystalline domains of up to half a millimetre in two dimensions and thickness of up to several microns from nanocrystals with tens of nanometres in diameter. Combining experimental and computational results for gold nanocrystals in the shapes of spheres, cubes, octahedra and rhombic dodecahedra, we investigate the entire self-assembly process from disordered suspensions to large-scale ordered superlattices induced by nanocrystal sedimentation and eventual solvent evaporation. Our findings reveal that the ultimate coherence length of superlattices strongly depends on nanocrystal shape. Factors inhibiting the formation of high-quality large-scale superlattices are explored in detail. Nature Publishing Group 2017-01-19 /pmc/articles/PMC5253678/ /pubmed/28102198 http://dx.doi.org/10.1038/ncomms14038 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Gong, Jianxiao
Newman, Richmond S.
Engel, Michael
Zhao, Man
Bian, Fenggang
Glotzer, Sharon C.
Tang, Zhiyong
Shape-dependent ordering of gold nanocrystals into large-scale superlattices
title Shape-dependent ordering of gold nanocrystals into large-scale superlattices
title_full Shape-dependent ordering of gold nanocrystals into large-scale superlattices
title_fullStr Shape-dependent ordering of gold nanocrystals into large-scale superlattices
title_full_unstemmed Shape-dependent ordering of gold nanocrystals into large-scale superlattices
title_short Shape-dependent ordering of gold nanocrystals into large-scale superlattices
title_sort shape-dependent ordering of gold nanocrystals into large-scale superlattices
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5253678/
https://www.ncbi.nlm.nih.gov/pubmed/28102198
http://dx.doi.org/10.1038/ncomms14038
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