title: Spectroscopy of single- and double-wall carbon nanotubes in different environments.
abstract: Individual single-wall carbon nanotubes (SWNTs) and double-wall carbon nanotubes (DWNTs) were suspended in water for optical studies using sodium-cholate and other surfactants. We used time-resolved photoluminescence (PL) spectroscopy to study the influence of tube chirality and diameter as well as of the environment on nonradiative decay in small diameter tubes. The studies provide evidence for PL from small diameter core tubes in DWNTs and for a correlation of nonradiative decay with tube diameter and exciton red shift as induced by interaction with the environment.
authors.affiliation: Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee, USA. Tobias.hertel@vanderbilt.edu
authors.forename: Tobias
authors.initials: T
authors.lastname: Hertel
authors.forename: Axel
authors.initials: A
authors.lastname: Hagen
authors.forename: Vadim
authors.initials: V
authors.lastname: Talalaev
authors.forename: Katharina
authors.initials: K
authors.lastname: Arnold
authors.forename: Frank
authors.initials: F
authors.lastname: Hennrich
authors.forename: Manfred
authors.initials: M
authors.lastname: Kappes
authors.forename: Sandra
authors.initials: S
authors.lastname: Rosenthal
authors.forename: James
authors.initials: J
authors.lastname: McBride
authors.forename: Hendrik
authors.initials: H
authors.lastname: Ulbricht
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Flahaut
mesh_terms: D008027:Light; D008422:Materials Testing / Q000379:methods; D036103:Nanotechnology / Q000379:methods; D037742:Nanotubes, Carbon / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D010316:Particle Size; D010777:Photochemistry / Q000379:methods*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon; D013501:Surface-Active Agents; D014867:Water