%0 Journal Article
%T Controlled alignment of individual single-wall carbon nanotubes at high concentrations in polymer matrices
%+ Laboratorio de Física de la Materia Condensada
%+ Laboratoire Charles Coulomb (L2C)
%A Zamora-Ledezma, Camilo
%A Blanc, Christophe
%A Anglaret, Eric
%< avec comité de lecture
%Z L2C:12-096
%@ 1932-7447
%J Journal of Physical Chemistry C
%I American Chemical Society
%V 116
%P 13760
%8 2012-06-26
%D 2012
%R 10.1021/jp212113b
%K Carbon nanotubes
%K polymer
%K Photoluminescence
%K Raman
%Z Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X We show that single-wall carbon nanotubes (SWCNT) can be dispersed as individuals in poly(vinyl alcohol) matrix composites up to concentrations of 1 wt %, as indicated by their strong photoluminescence (PL) signal in the near-infrared all along the processing steps. The alignment of the SWCNT is controlled by hot-stretching of the composite films. We show that orientational order can be described accurately from polarized Raman and PL spectroscopies, in good agreement with a simple affine model, providing their anisotropic absorption is properly taken into account. Similar results are obtained from different excitation laser lines (in the visible and near-infrared), confirming that all nanotubes orient the same way.
%G English
%Z NATALI
%L hal-00713317
%U https://hal.science/hal-00713317
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ ANR
%~ UM-2015-2021