A1 Journal article (refereed)
Chemically Selective Imaging of Individual Bonds through Scanning Electron Energy-Loss Spectroscopy : Disulfide Bridges Linking Gold Nanoclusters (2020)

Sokołowska, K., Luan, Z., Hulkko, E., Rameshan, C., Barrabés, N., Apkarian, V. A., & Lahtinen, T. (2020). Chemically Selective Imaging of Individual Bonds through Scanning Electron Energy-Loss Spectroscopy : Disulfide Bridges Linking Gold Nanoclusters. Journal of Physical Chemistry Letters, 11(3), 796-799. https://doi.org/10.1021/acs.jpclett.9b03496

JYU authors or editors

Publication details

All authors or editors: Sokołowska, Karolina; Luan, Zhongyue; Hulkko, Eero; Rameshan, Christoph; Barrabés, Noelia; Apkarian, Vartkess A.; Lahtinen, Tanja

Journal or series: Journal of Physical Chemistry Letters

eISSN: 1948-7185

Publication year: 2020

Volume: 11

Issue number: 3

Pages range: 796-799

Publisher: American Chemical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1021/acs.jpclett.9b03496

Publication open access: Not open

Publication channel open access: 

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67629

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.

Keywords: nanoparticles; chemical bonds; electron microscopy

Free keywords: disulfides; sulfur; scanning transmission electron microscopy; gold nanoclusters

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 3