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Engineering the architectural diversity of heterogeneous metallic nanocrystals

Author

Listed:
  • Yue Yu

    (National University of Singapore)

  • Qingbo Zhang

    (National University of Singapore)

  • Jianping Xie

    (National University of Singapore)

  • Jim Yang Lee

    (National University of Singapore)

Abstract

Similar to molecular engineering where structural diversity is used to create more property variations for application explorations, the architectural engineering of heterogeneous metallic nanocrystals (HMNCs) can likewise increase the versatility of metallic nanocrystals (NCs). Here we present a synthesis strategy capable of engineering the architectural diversity of HMNCs through rational and independent programming of every architecture-determining element, that is, the shape and size of the component NCs and their spatial arrangement. The strategy is based on the galvanic replacement reaction of a self-sustaining layer formed by underpotential deposition on a polyhedral NC. The selective deposition of satellite NCs on specific site of the central NC is realized by creating a geometry-dependent heterogeneous electron distribution. This site-selective deposition approach is applicable to central NCs in various polyhedral shapes and sizes. The satellite NCs can further develop their own shape and size through crystal growth kinetics control.

Suggested Citation

  • Yue Yu & Qingbo Zhang & Jianping Xie & Jim Yang Lee, 2013. "Engineering the architectural diversity of heterogeneous metallic nanocrystals," Nature Communications, Nature, vol. 4(1), pages 1-8, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2474
    DOI: 10.1038/ncomms2474
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