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- Title
Bis( tert-butylpyrene) Nanotweezers and Nanocalipers: Enhanced Extraction and Recognition Abilities for Single-Walled Carbon Nanotubes.
- Authors
Liu, Gang; Rahman, A. F. M. Mustafizur; Chaunchaiyakul, Songpol; Kimura, Takahide; Kuwahara, Yuji; Komatsu, Naoki
- Abstract
We developed a host-guest methodology for separation of single-walled carbon nanotubes (SWNTs) according to the handedness, diameter and metallicity by the use of diporphyrin nanotweezers and nanocalipers. Although the pyrene has been frequently used to replace porphyrin, due to a similar affinity to the surface of SWNTs and better availability, the extraction and recognition abilities of dipyrene nanotweezers were not so good as those of diporphyrin ones as we reported previously. However, introduction of a tert-butyl substituent at the 7′-position of 2-pyrene is found to enhance the extraction and recognition abilities of dipyrene nanotweezers and nanocalipers. That is, (6,5)-SWNTs were obtained in high purity by use of bis( tert-butylpyrene) nanotweezers with a phenanthrene spacer and metallic SWNTs were highly enriched by use of bis( tert-butylpyrene) nanocalipers with a carbazole-anthracene-carbazole spacer.
- Subjects
CARBON nanotubes; SINGLE walled carbon nanotubes; PYRENE; TERT-Butyl halides; PHENANTHRENE; CARBAZOLE
- Publication
Chemistry - A European Journal, 2013, Vol 19, Issue 48, p16221
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201302799