Non-covalent fonctionnalisation of single-walled carbon nanotubes : Study of the confinement of photo-active molecules and rubidium intercalation.
type: Dataset
description: This experimental work concerns the development and the study of 1D hybrid systems of single-walled carbon nanotubes non-covalently fonctionnalized. Two different approaches are discussed. The first experimental study deals with the intercalation of rubidium in carbon nanotubes bundles. The aim is to link structural and electronic properties along the doping process. To do, we developed an original and dedicated home-made set adapted to the use on synchrotron facilities. It permits the following of the intercalation by means of an in-situ multi-techniques approach. In this part, we pointed out that the local environnement of rubidium is dependant of the compound stœchiometries. It appears that oxygenated surface defects are first occupied for low doping rates. The structure modification is also linked to a semiconducting/metal transition of carbon nanotubes observed by resistance measurements and Raman spectroscopy. The second experimental study is devoted to the confinement of oligothiophenes inside single-walled carbon nanotubes. X-Ray diffraction and high resolution transmission electronic microscopy measurements demonstrate the efficiency of our encapsulation process. Several spectroscopic techniques such as UV-Visible and infrared absorptions and Raman diffusion indicate a weak charge transfer between both systems. This result is well evidenced by the profile, intensity and frequency modifications of the high frequency Raman modes. We note the good agreement of these results with the energy renormalisation of phonons discussed in the literature. In addition, some confinement effects depending on carbon nanotubes diameter are pointed out by the study of low frequency Raman modes. Two models are proposed to explain the observed trend. The first one suggests a behavior independent of the nature of the inserted element. In the second one, the number of oligothiophene chains encapsulated in function of carbon nanotubes diameter is considered. We also show a signific…
identifier: NNT: 2013MON20057
issued: 2026-05-05T10:03:31.529807
language: fr
modified: 2026-05-05T10:03:31.529812
contact point: Organization
  fn: CCSD
keyword: confinement
keyword: dopage
keyword: doping
keyword: encapsulation
keyword: exafs
keyword: infoeu-reposemanticsdoctoralthesis
keyword: nanotubes-de-carbone-mono-feuillets
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: raman-spectroscopy
keyword: single-walled-carbon-nanotubes
keyword: spectroscopie-raman
keyword: theses
landing page: https://theses.hal.science/tel-00997533

Non-covalent fonctionnalisation of single-walled carbon nanotubes : Study of the confinement of photo-active molecules and rubidium intercalation.
type: Distribution
format: HTML
issued: 2026-05-05T10:03:31.538076
modified: 2026-05-05T10:03:31.516849
access URL: https://theses.hal.science/tel-00997533

test_moissonnage_selune
type: Agent