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Structural insights into glutathione-protected gold Au10−12(SG)10−12 nanoclusters revealed by ion mobility mass spectrometry

  • Clothilde Comby-Zerbino
  • Franck Bertorelle
  • Fabien Chirot
  • Philippe Dugourd
  • Rodolphe Antoine
Regular Article
  • 34 Downloads
Part of the following topical collections:
  1. Topical Issue: Atomic Cluster Collisions

Abstract

Gold nanoclusters protected by ligands present well-defined compositions and tunable structures, which builds a solid basis for correlation between structures and properties. We report a combined ion mobility-mass spectrometry approach for the analysis of ultra-small gold nanoclusters protected by glutathione (SG) as ligand molecules, Au10−12(SG)10−12. Collision cross section (CCS) measurements are reported for different charge states for Au10(SG)10, Au11(SG)11 and Au12(SG)12 nanoclusters. Computational calculations, at the PM7 semi-empirical level of theory, are performed to optimize geometrical structures and use them to compute CCS. The comparison of the experimentally and theoretically determined CCS allows drawing conclusions on the structural changes, in particular partial unfolding of SG ligands, upon charging.

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Supplementary material

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Copyright information

© EDP Sciences, SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institut lumière matière, UMR 5306 Université Claude Bernard Lyon 1-CNRS, Université de LyonVilleurbanne cedexFrance
  2. 2.Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280VilleurbanneFrance

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