Chemically Selective Imaging of Individual Bonds through Scanning Electron Energy-Loss Spectroscopy: Disulfide Bridges Linking Gold Nanoclusters

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Karolina Sokołowska
  • Zhongyue Luan
  • Eero Hulkko
  • Christoph Rameshan
  • Noelia Barrabés
  • Vartkess A. Apkarian
  • Tanja Lahtinen

Research units

  • University of California
  • Vienna University of Technology
  • University of Jyväskylä

Abstract

As proof-of-principle of chemically selective, spatially resolved imaging of individual bonds, we carry out electron energy-loss spectroscopy in a scanning transmission electron microscopy instrument on atomically precise, thiolate-coated gold nanoclusters linked with 5,5'-bis(mercaptomethyl)-2,2'-bipyridine dithiol ligands. The images allow the identification of bridging disulfide bonds (R-S-S-R) between clusters, and X-ray photoelectron spectra support the finding.

Details

Original languageEnglish
Pages (from-to)796-799
Number of pages4
JournalThe journal of physical chemistry letters
Volume11
Issue number3
Publication statusPublished - 6 Feb 2020
MoE publication typeA1 Journal article-refereed

ID: 41058727