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Title of Journal: Nano Res

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Abbravation: Nano Research

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Tsinghua Press

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DOI

10.1016/0167-8809(90)90232-3

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1998-0000

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Isolation of singlewalled carbon nanotube enantio

Authors: Alexander A Green Matthew C Duch Mark C Hersam
Publish Date: 2010/03/05
Volume: 2, Issue: 1, Pages: 69-77
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Abstract

Current methods of synthesizing singlewalled carbon nanotubes SWNTs result in racemic mixtures that have impeded the study of left and righthanded SWNTs Here we present a method of isolating different SWNT enantiomers using density gradient ultracentrifugation Enantiomer separation is enabled by the chiral surfactant sodium cholate which discriminates between left and righthanded SWNTs and thus induces subtle differences in their buoyant densities This sorting strategy can be employed for simultaneous enrichment by handedness and rollup vector of SWNTs having diameters ranging from 07 to 15 nm In addition circular dichroism of enantiomer refined samples enables identification of highenergy optical transitions in SWNTsThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team

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