Angewandte Chemie International Edition

Cover image for Vol. 53 Issue 16

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, Zeitschrift für Chemie

50_12b/2011Back Cover: Separation and Diameter-Sorting of Empty (End-Capped) and Water-Filled (Open) Carbon Nanotubes by Density Gradient Ultracentrifugation (Angew. Chem. Int. Ed. 12/2011)

Density-gradient ultracentrifugation can be used to separate empty (end-capped) and water-filled (open) carbon nanotubes, which coexist in aqueous solutions. As S. Cambré and W. Wenseleers report in their Communication on page 2764 ff., each nanotube chirality can be observed at two different densities, which correspond to empty and water-filled tubes. The separated empty and filled tubes can be further diameter-sorted in one centrifugation run.

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