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

• Published in: Analytical chemistry (Washington) Vol. 83; no. 13; pp. 5056 - 5061
• Main Authors: Knoppe, Stefan, Boudon, Julien, Dolamic, Igor, Dass, Amala, Bürgi, Thomas
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.07.2011
• Subjects: Analytical chemistry; Chemical Sciences; Chemistry; Chromatographic methods and physical methods associated with chromatography; Exact sciences and technology; Other chromatographic methods; Spectrometric and optical methods; Nanocluster; Gold; Size; Thiolate; Use; HPLC chromatography; Matrix assisted laser desorption ionization; Mass spectrometry; Mixture; Electron spectrometry; Gel permeation chromatography; Ultraviolet visible spectrometry

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 gai...