title: Toward the extraction of single species of single-walled carbon nanotubes using fluorene-based polymers.
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).
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University 50, Nanyang Avenue, Singapore 637819.
authors.forename: Fuming
authors.initials: F
authors.lastname: Chen
authors.forename: Bo
authors.initials: B
authors.lastname: Wang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Chen
authors.forename: Lain-Jong
authors.initials: LJ
authors.lastname: Li
mesh_terms: D003460:Crystallization / Q000379:methods*; D005449:Fluorenes / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*; D013499:Surface Properties
chemical_list: D005449:Fluorenes; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D011108:Polymers