Laboratoire Charles Coulomb UMR 5221 CNRS/UM2 (L2C)

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Accueil > Colloïdes, Verres et Nanomatériaux > Equipe : Nanostructures > Thème : Dopage, confinement et fonctionnalisation dans les nanotubes

Thème : Dopage, confinement et fonctionnalisation dans les nanotubes

The controlled tuning of carbon nanotubes physical properties constitutes one of the major challenges for the application of these materials. We aimed at modifying either the electronic or the structural properties. We explored four different directions that look particularly interesting :
The first one consists in the doping of carbon nanotube with other chemical elements like boron (B) or nitrogen (N).
The second one concerns the functionalization of the carbon nanotubes. Carbon nanotubes can be fonctionalized either by oxidation or by attaching covalently organic molecules via nitrenes, carbenes or radicals...
The third one deals with the intercalation by alkali metals or halogens in order to induce a charge transfer between the host material and the nanotubes.
The last one is the trapping of foreign species into the hollow core of nanotube that can give rise to fascinating confinement effects since the behavior of the confined phases can differ significantly from the bulk phases. Our group has been investigating for many years confinement effects of several species A (A=iodine chains, C60 molecules, conjugated polymer ...) inserted into the inner core of SWNT. The main objective is to induce an efficient coupling between the host species and the SWNT in order to modify either the electronic or the optical properties of SWNT. Indeed, the strong interaction between the enclosed specie and the SWNT cavity allows to finely tune the characteristics of the whole system.

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PERMANENTS NON PERMANENTS

Nitrogen doping of carbon nanotubes

Involved researchers : J.L. Bantignies, L. Alvarez, R. Baaba Collaboration : B. Doyle - ELECTRA (Trieste, Italie), A. Loiseau - LEM, ONERA, F. Lenormand - IPCMS Strasbourg, Ph. Parent - LCPMR (...)

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Functionalization of carbon nanotubes

Involved researchers : J.L. Bantignies, M. Paillet Collaboration : J.P. Lère-Porte, F. Serein-Spirau - ICG Montpellier)
Structural modification of carbon nanotubes offers the possibility to (...)

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Modeling of adsorption in/on carbon nanostructures

Introduction.
During the last half of century computational physics has grown in scope and importance to a point where it became a third part of the traditional division between experimental and (...)

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Structure and electronic properties of nanotubes in polyelectrolyte solutions

Involved researchers : F. Dragin (PhD), E. Anglaret Collaboration : A. Pénicaud (CNRS Bordeaux) and R. Martel (Dpt Chemistry, U. Montréal
Nanotubes salts (charge transfer systems nanotube-alkali (...)

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Structural properties of rubidium intercalated single walled carbon nanotubes

Involved researchers : J.L. Bantignies, L. Alvarez, J.L.Sauvajol, A. Zahab, R. Aznar, E. Alibert Collaboration : F. Villain, V. Briois (SAMBA, Soleil, Saint Aubin)
Alkali metal insertion into (...)

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Structural properties of carbon peapods

Involved researchers : L. Alvarez, J.L.Sauvajol, R. Almairac, M.Chorro, S. Rols, J. Cambedouzou, J.L. Sauvajol Collaborations : M. Mezouar, ID 27 (ESRF, Grenoble), H. Kataura (AIST, Japan) (...)

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Structural properties of iodine intercalated carbon nanotubes

Involved researchers : L. Alvarez, J.L. Bantignies, J.L.Sauvajol, R. Leparc, A. Zahab, R. Aznar Collaborations : A. San Miguel, D. Machon (LPMCN, Lyon), M. Chorro, O. Mathon (BM 29, ESRF, (...)

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Quater-thiophene encapsulated into single walled carbon nanotubes

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, (...)

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Modeling of adsorption in/on carbon nanostructures (and beyond them).

Introduction.
During the last half of century computational physics has grown in scope and importance to a point where it became a third part of the traditional division between experimental and (...)

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