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1D-confinement of polyiodides inside single-wall carbon nanotubes

Abstract : 1D-confinement of polyiodides inside single-wall carbon nanotubes (SWCNT) is investigated. Structural arrangement of iodine species as a function of the SWCNT diameters is studied. Evidence for long range one dimensional ordering of the iodine species is shown by X-ray and electron diffraction experiments independently of the tube diameter. The structure of the confined polyiodides is investigated by X-ray absorption spectroscopy. The confinement influences the local arrangement of the chains. Below a critical diameter Fc of 1 nm, long linear polyiodides are evidenced leading to a weaker charge transfer than for nanotube diameter above Fc. A shortening of the polyiodides is exhibited with the increase of the nanotube diameter leading to a more efficient charge transfer. This point reflects the 1D-confinement of the polyiodides inside the nanotubes.
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M. Chorro, G. Kane, Laurent Alvarez, J. Cambedouzou, E. Paineau, et al.. 1D-confinement of polyiodides inside single-wall carbon nanotubes. Carbon, Elsevier, 2013, 52, pp.100-108. ⟨10.1016/j.carbon.2012.09.010⟩. ⟨hal-00808165⟩

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