Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 33, Pages 14628-14632Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp902788y
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Funding
- Deutsche Forschungsgemeinschaft (DFG)
- Karlsruhe Center for Functional Nanostructures (CFN)
- Bundesministerium Mr Bildung und Forschung (BMBF)
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We describe simple procedures to obtain near monochiral samples of several single-walled carbon nanotube (SWNT) species starting from SWNT raw material. (7,5), (7,6), (10,5), and (9,7) nanotubes were obtained with respective enrichments of up to similar to 90% (as estimated from photoluminescence and absorption spectra) by their selective dispersion in toluene with various fluorene-based polymers and Subsequent centrifugation. Further highly enriched samples, for instance of (6,5) nanotubes, were prepared by implementing density gradient centrifugation of dispersions of SWNTs in organic solvents with 2,4,6-tribromotoluene as the density gradient additive.
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