Spectroscopy of single- and double-wall carbon nanotubes in different environments.
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.
Hertel
Tobias
T
Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee, USA. Tobias.hertel@vanderbilt.edu
Hagen
Axel
A
Talalaev
Vadim
V
Arnold
Katharina
K
Hennrich
Frank
F
Kappes
Manfred
M
Rosenthal
Sandra
S
McBride
James
J
Ulbricht
Hendrik
H
Flahaut
Emmanuel
E
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*
D037742:Nanotubes, Carbon; D013501:Surface-Active Agents; D014867:Water