1D-confinement of polyiodides inside single-wall carbon nanotubes |
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| Affiliation: | 1. European Synchrotron Radiation Facility, 91192 Grenoble, France;2. Laboratoire Charles Coulomb, UMR 5221, Université Montpellier 2, F-34095 Montpellier, France;3. Laboratoire Charles Coulomb, UMR 5221, CNRS, F-34095 Montpellier, France;4. Laboratoire de Physique des Solides, UMR 8502, CNRS, Université Paris Sud, bât. 510, 91405 Orsay, France;5. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiochemstry, Dresden, Germany;1. School of Computer & Communication Engineering, University of Science & Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, PR China;2. Computer Network Information Center of CAS, Beijing, 100190, PR China;1. International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India;2. Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India |
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| 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 Φc of 1 nm, long linear polyiodides are evidenced leading to a weaker charge transfer than for nanotube diameter above Φc. 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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