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Polymorphism in magic-sized Au144(SR)60 clusters

Author

Listed:
  • Kirsten M.Ø. Jensen

    (Columbia University)

  • Pavol Juhas

    (Brookhaven National Laboratory)

  • Marcus A. Tofanelli

    (Colorado State University)

  • Christine L. Heinecke

    (Colorado State University)

  • Gavin Vaughan

    (European Synchrotron Radiation Facility)

  • Christopher J. Ackerson

    (Colorado State University)

  • Simon J. L. Billinge

    (Columbia University
    Brookhaven National Laboratory)

Abstract

Ultra-small, magic-sized metal nanoclusters represent an important new class of materials with properties between molecules and particles. However, their small size challenges the conventional methods for structure characterization. Here we present the structure of ultra-stable Au144(SR)60 magic-sized nanoclusters obtained from atomic pair distribution function analysis of X-ray powder diffraction data. The study reveals structural polymorphism in these archetypal nanoclusters. In addition to confirming the theoretically predicted icosahedral-cored cluster, we also find samples with a truncated decahedral core structure, with some samples exhibiting a coexistence of both cluster structures. Although the clusters are monodisperse in size, structural diversity is apparent. The discovery of polymorphism may open up a new dimension in nanoscale engineering.

Suggested Citation

  • Kirsten M.Ø. Jensen & Pavol Juhas & Marcus A. Tofanelli & Christine L. Heinecke & Gavin Vaughan & Christopher J. Ackerson & Simon J. L. Billinge, 2016. "Polymorphism in magic-sized Au144(SR)60 clusters," Nature Communications, Nature, vol. 7(1), pages 1-8, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11859
    DOI: 10.1038/ncomms11859
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