Toward the extraction of single species of single-walled carbon nanotubes using fluorene-based polymers

Nano Lett. 2007 Oct;7(10):3013-7. doi: 10.1021/nl071349o. Epub 2007 Sep 15.

Abstract

High purity of (7,5) SWNTs (approximately 79% of the semisonducting SWNT ensemble) can be obtained by polymer-assisted extraction from the narrow-diameter distributed SWNTs produced by the catalyst Co-MCM-41. The fluorene-based polymers are able to selectively wrap the single-walled carbon nanotubes (SWNTs) with certain chiral angles or diameters depending on their chemical structures. Poly(9,9-dioctyfluoreny1-2, 7-diyl) and poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,10-anthracene)] selectively wrap SWNTs with high chiral angles (>24.5 degrees). By contrast, poly[9,9-dioctylfluorenyl-2,7-diyl)-co-1,4-benzo-{2,1'-3}-thiadiazole)] preferentially wraps the SWNTs with certain diameter (1.02-1.06 nm).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallization / methods*
  • Fluorenes / chemistry*
  • Macromolecular Substances / chemistry
  • Materials Testing
  • Molecular Conformation
  • Nanotechnology / methods*
  • Nanotubes, Carbon / chemistry*
  • Nanotubes, Carbon / ultrastructure*
  • Particle Size
  • Polymers / chemistry*
  • Solid Phase Microextraction / methods*
  • Surface Properties

Substances

  • Fluorenes
  • Macromolecular Substances
  • Nanotubes, Carbon
  • Polymers