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dc.contributor.authorSchmid, Marc R.
dc.contributor.authorMahfouz, Remi
dc.contributor.authorBouhrara, Mohamed
dc.contributor.authorSaih, Youssef
dc.contributor.authorMehring, Michael
dc.contributor.authorBasset, Jean-Marie
dc.contributor.authorGoze-Bac, Christophe
dc.contributor.authorAbou-Hamad, Edy
dc.date.accessioned2015-08-03T10:03:10Z
dc.date.available2015-08-03T10:03:10Z
dc.date.issued2012-11
dc.identifier.issn00086223
dc.identifier.doi10.1016/j.carbon.2012.07.016
dc.identifier.urihttp://hdl.handle.net/10754/562380
dc.description.abstractIn the present study, we investigated Cs-intercalated single wall carbon nanotubes (SWCNTs) using 133Cs Nuclear Magnetic resonance. We show that there are two types of Cs cations depending on the insertion level. Indeed, at low concentrations, Static spectra analysis shows that the Cs (α)+ species are fully ionized, i.e. α equal ca.1, while at higher concentrations a second paramagnetically shifted line appears, indicating the formation of Cs (β)+ ions with β < α ∼ +1. At low concentrations and low temperatures the Cs (α)+ ions exhibit a weak hyperfine coupling to the SWCNT conduction electrons, whereas, at higher temperatures, a thermally activated slow-motion diffusion process of the Cs (α)+ ions occurs along the interstitial channels present within the carbon nanotube bundles. At high concentrations, the Cs (β)+ ions seem to occupy well defined positions relative to the carbon lattice. As a matter of fact, the Korringa relaxation behavior suggests a strong hyperfine coupling between Cs nuclei and conduction electrons in the carbon nanotubes and a partial charge transfer, which suggest a plausible Cs(6s)-C(2p) hybridization. © 2012 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipC. Goze-Bac is grateful to the Region Languedoc-Roussillon for its financial support.
dc.publisherElsevier BV
dc.titleProperties of Cs-intercalated single wall carbon nanotubes investigated by 133Cs Nuclear Magnetic resonance
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCarbon
dc.contributor.institutionPhysikalisches Institut, Universität Stuttgart, D-70569 Stuttgart, Germany
dc.contributor.institutionNanoNMRI Group, UMR5587, Université Montpellier II, Place E. Bataillon, 34095 Montpellier, Cedex 5, France
kaust.personMahfouz, Remi
kaust.personBouhrara, Mohamed
kaust.personSaih, Youssef
kaust.personBasset, Jean-Marie
kaust.personAbou-Hamad, Edy


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