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- Enhancing the Infrared Response of Carbon Nanotubes From Oligo-Quaterthiophene Interactions doi link

Auteur(s): Belhboub A., Hermet P., Alvarez L., Le Parc R., Rols Stéphane, Lopes Selvati A. C., Jousselme Bruno, Sato Y., Suenaga K., Rahmani Abdelali, Bantignies J.-L.

(Article) Publié: The Journal Of Physical Chemistry C, vol. 120 p.28802-28807 (2016)


Ref HAL: hal-01421543_v1
DOI: 10.1021/acs.jpcc.6b09329
WoS: 000390735600047
Exporter : BibTex | endNote
9 Citations
Résumé:

Infrared response on a carbon nanotube is weak because this homonuclear allotrope of carbon does not bear permanent dipoles. Here, we report the discovery of an exaltation of the infrared absorption response in single-walled carbon nanotubes from dye molecule interactions. A study performed on dimethylquaterthiophene confined into the hollow core of single-walled carbon nanotubes or π-stacked at the outer surface of the latter leads to a symmetry breaking, allowing us to probe interactions between both subsystems. The nature of these interactions is discussed taking into account the tube diameter. This new phenomenon opens a new route to detect weak vibrations thanks to a confinement effect.