title: Photoluminescence mapping of "as-grown" single-walled carbon nanotubes: a comparison with micelle-encapsulated nanotube solutions.
abstract: Band gap photoluminescence (PL) is observed from "as-grown" single-walled carbon nanotubes (SWNTs) in solid form. The relative PL intensities for six specific semiconducting SWNTs are compared directly to those of the micelle-encapsulated SWNTs' solutions to investigate the influence of the micelle dispersion process on PL measurements. The results indicate that sodium dodecyl sulfate (SDS) and sodium cholate (SC) selectively solubilize smaller-diameter nanotubes, whereas sodium dodecylbenzene sulfonate (SDBS) solution does not exhibit significant diameter selectivity within the diameter range studied here (d(t) = 0.829-0.966 nm).
authors.affiliation: Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan. toshi.okazaki@aist.go.jp
authors.forename: Toshiya
authors.initials: T
authors.lastname: Okazaki
authors.forename: Takeshi
authors.initials: T
authors.lastname: Saito
authors.forename: Koji
authors.initials: K
authors.lastname: Matsuura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ohshima
authors.forename: Motoo
authors.initials: M
authors.lastname: Yumura
authors.forename: Sumio
authors.initials: S
authors.lastname: Iijima
mesh_terms: D003102:Colloids / Q000737:chemistry* / Q000528:radiation effects; D003460:Crystallization / Q000379:methods*; D008027:Light; D049449:Luminescence; D008422:Materials Testing; D008823:Micelles; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D010777:Photochemistry / Q000379:methods*; D012996:Solutions
chemical_list: D003102:Colloids; D008823:Micelles; D037742:Nanotubes, Carbon; D012996:Solutions