Size Exclusion Chromatography for Semipreparative Scale Separation of Au₃₈(SR)₂₄ and Au₄₀(SR)₂₄ and Larger Clusters - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Analytical Chemistry Année : 2011

Size Exclusion Chromatography for Semipreparative Scale Separation of Au₃₈(SR)₂₄ and Au₄₀(SR)₂₄ and Larger Clusters

Stefan Knoppe
  • Fonction : Auteur
Julien Boudon
Igor Dolamic
  • Fonction : Auteur
Amala Dass
  • Fonction : Auteur
Thomas Bürgi
  • Fonction : Auteur

Résumé

Size exclusion chromatography (SEC) on a semipreparative scale (10 mg and more) was used to size-select ultrasmall gold nanoclusters (<2 nm) from polydisperse mixtures. In particular, the ubiquitous byproducts of the etching process toward Au₃₈(SR)₂₄ (SR, thiolate) clusters were separated and gained in high monodispersity (based on mass spectrometry). The isolated fractions were characterized by UV–vis spectroscopy, MALDI mass spectrometry, HPLC, and electron microscopy. Most notably, the separation of Au₃₈(SR)₂₄ and Au₄₀(SR)₂₄ clusters is demonstrated.

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Chimie
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Dates et versions

hal-03792887 , version 1 (30-09-2022)

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Citer

Stefan Knoppe, Julien Boudon, Igor Dolamic, Amala Dass, Thomas Bürgi. Size Exclusion Chromatography for Semipreparative Scale Separation of Au₃₈(SR)₂₄ and Au₄₀(SR)₂₄ and Larger Clusters. Analytical Chemistry, 2011, 83 (13), pp.5056-5061. ⟨10.1021/ac200789v⟩. ⟨hal-03792887⟩

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