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Stability and transformations of heated gold nanorods

Journal of Physical Chemistry C, ISSN: 1932-7447, Vol: 115, Issue: 11, Page: 4375-4380
2011
  • 28
    Citations
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  • 46
    Captures
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Metrics Details

  • Citations
    28
    • Citation Indexes
      28
  • Captures
    46

Article Description

We have simulated the heating process of gold nanorods, elucidating a mechanism by which nanorods alter their aspect ratio at higher temperatures. We also studied the relative stabilities of nanorods by constructing nanorods with varying ratios of {110} to {100} exposed surfaces along the body of the nanorod. The least stable nanorod was found to be the nanorod with the largest {110} surfaces, followed by the nanorod with the largest {100} surfaces, while the nanorod with approximately equal surface areas of {100} and {110} surface was found to be the most stable. It was also found that the addition of surface disorder increased the stability of nanorods with large {110} surfaces, while paradoxically decreasing the stability of nanorods with large {100} surfaces. The reasons for this are elucidated and compared to experimental laser-induced gold nanorod transformation studies. © 2011 American Chemical Society.

Bibliographic Details

G. Opletal; G. Grochola; I. K. Snook; S. P. Russo; Yu Hang Chui

American Chemical Society (ACS)

Materials Science; Energy; Chemistry

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