Structural determination of iodine localization in single-walled carbon nanotube bundles by diffraction methods

N Bendiab; R Almairac; S Rols; R Aznar; J.-L Sauvajol

doi:10.1103/PhysRevB.69.195415

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Structural determination of iodine localization in single-walled carbon nanotube bundles by diffraction methods

Bendiab, N; Almairac, R; Rols, S; Aznar, R; Sauvajol, J.-L

Follow Physical Review B , Volume 69 (19) American Physical Society (APS) – May 15, 2004

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$X-ray- and neutron-diffraction investigations of iodine intercalated single-walled carbon nanotubes are reported. Charge transfer between nanotubes and iodine leads to the formation of I n - species (mainly I 3 - and I 5 - ) as shown by Raman spectroscopy. By combining x-ray and neutron experiments, we show that the I n - species are mainly localized inside the tubes. By comparing the experimental diagrams to our calculations, we show that some I n - species are also present in the channels in between three tubes inside the bundles. The intercalation process also increases the disorder of the two-dimensional triangular lattice leading to a broad distribution of the iodine-carbon distances. Well ordered single-walled nanotube bundles are recovered after dedoping.$

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Title: Structural determination of iodine localization in single-walled carbon nanotube bundles by diffraction methods
Author(s): Bendiab, N; Almairac, R; Rols, S; Aznar, R; Sauvajol, J.-L
Journal: Follow Physical Review B , Volume 69 (19) American Physical Society (APS) – May 15, 2004
Publisher: The American Physical Society
ISSN: 1550-235X
D.O.I.: 10.1103/PhysRevB.69.195415
Publisher site: Get PDF