Electron microscopy of gold nanoparticles at atomic resolution

Maia Azubel, Jaakko Koivisto, Sami Malola, David Bushnell, Greg L. Hura, Ai Leen Koh, Hironori Tsunoyama, Tatsuya Tsukuda, Mika Pettersson, Hannu Häkkinen, Roger D. Kornberg

Research output: Contribution to journalArticle

184 Citations (Scopus)

Abstract

Structure determination of gold nanoparticles (AuNPs) is necessary for understanding their physical and chemical properties, but only one AuNP larger than 1 nanometer in diameter [a 102-gold atom NP (Au102NP)] has been solved to atomic resolution. Whereas the Au102NP structure was determined by x-ray crystallography, other large AuNPs have proved refractory to this approach. Here, we report the structure determination of a Au 68NP at atomic resolution by aberration-corrected transmission electron microscopy, performed with the use of a minimal electron dose, an approach that should prove applicable to metal NPs in general. The structure of the Au68NP was supported by small-angle x-ray scattering and by comparison of observed infrared absorption spectra with calculations by density functional theory.

Original languageEnglish
Pages (from-to)909-912
Number of pages4
JournalScience
Volume345
Issue number6199
DOIs
Publication statusPublished - 2014 Aug 22

ASJC Scopus subject areas

  • General

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    Azubel, M., Koivisto, J., Malola, S., Bushnell, D., Hura, G. L., Koh, A. L., Tsunoyama, H., Tsukuda, T., Pettersson, M., Häkkinen, H., & Kornberg, R. D. (2014). Electron microscopy of gold nanoparticles at atomic resolution. Science, 345(6199), 909-912. https://doi.org/10.1126/science.1251959