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Article Dans Une Revue Journal of Physical Chemistry C Année : 2012

Controlled alignment of individual single-wall carbon nanotubes at high concentrations in polymer matrices

Christophe Blanc
Eric Anglaret
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Résumé

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.
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Dates et versions

hal-00713317 , version 1 (29-06-2012)

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Camilo Zamora-Ledezma, Christophe Blanc, Eric Anglaret. Controlled alignment of individual single-wall carbon nanotubes at high concentrations in polymer matrices. Journal of Physical Chemistry C, 2012, 116, pp.13760. ⟨10.1021/jp212113b⟩. ⟨hal-00713317⟩
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