Surface structure of CdSe nanorods revealed by combined X-ray absorption fine structure measurements and ab initio calculations

Deborah M. Aruguete, Matthew A. Marcus, Liang Shi Li, Andrew Williamson, Sirine Fakra, Francois Gygi, Giulia A. Galli, A. Paul Alivisatos

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Abstract

We report orientation-specific, surface-sensitive structural characterization of colloidal CdSe nanorods with extended X-ray absorption fine structure spectroscopy and ab initio density functional theory calculations. Our measurements of crystallographically aligned CdSe nanorods show that they have reconstructed Cd-rich surfaces. They exhibit orientation-dependent changes in interatomic distances which are qualitatively reproduced by our calculations. These calculations reveal that the measured interatomic distance anisotropy originates from the nanorod surface.

Original languageEnglish (US)
Pages (from-to)75-79
Number of pages5
JournalJournal of Physical Chemistry C
Volume111
Issue number1
DOIs
Publication statusPublished - Jan 11 2007

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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