Laboratoire Charles Coulomb UMR 5221 CNRS/UM2 (L2C)

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Accueil > La Recherche > Axes & Equipes > Nanostructures & Spectroscopies > Equipe : Nanomatériaux > Thème : Dopage, confinement et fonctionnalisation dans les nanotubes

Quater-thiophene encapsulated into single walled carbon nanotubes

par Sébastien LAYSSAC - publié le

Involved researchers : L. Alvarez, J.L. Bantignies, J.L.Sauvajol, R. Leparc, A. Zahab
Collaborations : P. Hermet (FUNDP, Namur, Belgique), R. Babaa, P. Jegou (CEA, Saclay), S. Rols (ILL, Grenoble)

Encapsulation of conjugated polymers into SWNT can extend the optical properties of SWNT to the UV domain. Thus, the whole system could be used as a nanodiode being able of absorbing light over a wide range, from the UV to the near infrared.
Very recently, we undertook studies in collaboration with CEA saclay on quaterthiophene encapsulated into SWNT (figure 1) by Raman spectroscopy and inelastic neutrons scattering on the beamlines IN4 and IN6 at ILL. An important charge transfer between the guest oligothiophenes and the host tube has been evidenced. This strong interaction significantly changes the optical properties of the quaterthiophene. Inelastic neutrons scattering evidenced a phase transition for temperatures below 150 K.

Figure 1 : Quater-thiophene encapsulated into SWNT - © L2C

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