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

Author

Listed:
  • Jianxiao Gong

    (Chinese Academy of Science (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology)

  • Richmond S. Newman

    (University of Michigan
    Biointerfaces Institute, University of Michigan)

  • Michael Engel

    (University of Michigan
    Biointerfaces Institute, University of Michigan
    Present address: Multiscale Institute for Simulation, Friedrich-Alexander University Erlangen-Nuürnberg, 91058 Erlangen, Germany)

  • Man Zhao

    (Chinese Academy of Science (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology)

  • Fenggang Bian

    (Shanghai Synchrotron Radiation Facility, Shanghai Institutes of Applied Physics)

  • Sharon C. Glotzer

    (University of Michigan
    Biointerfaces Institute, University of Michigan
    University of Michigan)

  • Zhiyong Tang

    (Chinese Academy of Science (CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology)

Abstract

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.

Suggested Citation

  • Jianxiao Gong & Richmond S. Newman & Michael Engel & Man Zhao & Fenggang Bian & Sharon C. Glotzer & Zhiyong Tang, 2017. "Shape-dependent ordering of gold nanocrystals into large-scale superlattices," Nature Communications, Nature, vol. 8(1), pages 1-9, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14038
    DOI: 10.1038/ncomms14038
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    Cited by:

    1. Xiaoju Yang & Chao Rong & Li Zhang & Zhenkun Ye & Zhiming Wei & Chengdi Huang & Qiao Zhang & Qing Yuan & Yueming Zhai & Fu-Zhen Xuan & Bingjun Xu & Bowei Zhang & Xuan Yang, 2024. "Mechanistic insights into C-C coupling in electrochemical CO reduction using gold superlattices," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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