High-resolution C-13 nuclear magnetic resonance evidence of phase transition of Rb,Cs-intercalated single-walled nanotubes

M. Bouhrara , Y. Saih , T. Wagberg , Christophe Goze-Bac (1) , E. Abou-Hamad

1 L2C - Laboratoire Charles Coulomb

We present 13 C high-resolution magic-angle-turning (MAT) and magic angle spinning nuclear magnetic resonance data of Cs and Rb intercalated single walled carbon nanotubes. We find two distinct phases at different intercalation levels. A simple charge transfer is applicable at low intercalation level. The new phase at high intercalation level is accompanied by a hybridization of alkali (s) orbitals with the carbon (sp2) orbitals of the single walled nanotubes, which indicate bundle surface sites is the most probable alkali site. (C) 2011 American Institute of Physics. [doi:10.1063/1.3631052]

Mots clés: CARBON NANOTUBES; INTERCALATION COMPOUNDS; GRAPHITE

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Physique Médicale [physics.med-ph]; Instrumentations et Détecteurs [physics.ins-det]

M. Bouhrara, Y. Saih, T. Wagberg, Christophe Goze-Bac, E. Abou-Hamad. High-resolution C-13 nuclear magnetic resonance evidence of phase transition of Rb,Cs-intercalated single-walled nanotubes. Journal of Applied Physics, 2011, 110, pp.054306. ⟨10.1063/1.3631052⟩. ⟨hal-00657330⟩