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The Crystallography of Metal Halides formed within Single Walled Carbon Nanotubes

Published online by Cambridge University Press:  15 March 2011

J. Sloan ,
G. Brown ,
S.R. Bailey ,
K.S. Coleman ,
E. Flahaut ,
S. Friedrichs ,
C. Xu ,
M.L.H. Green ,
R.E. Dunin-Borkowski  and
J.L. Hutchison
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J. Sloan
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K. Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, U.K.
G. Brown
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K. Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, U.K.
S.R. Bailey
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K.
K.S. Coleman
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K.
E. Flahaut
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K.
S. Friedrichs
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K.
C. Xu
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K.
M.L.H. Green
Affiliation:
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K.
R.E. Dunin-Borkowski
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, U.K.
J.L. Hutchison
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, U.K.
A.I. Kirkland
Affiliation:
Department of Materials Science, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, U.K.
R.R. Meyer
Affiliation:
Department of Materials Science, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, U.K.
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Abstract

The crystal growth behaviour and crystallography of a variety of metal halides incorporated within single walled carbon nanotubes (SWNTs) as determined by high resolution electron microscopy (HRTEM) is described. Simple packed structures, such as the alkali halides, form related structures within SWNTs that are found to be integral atomic layers in terms of their thickness as a function of the encapsulating SWNT diameter. An enhanced HRTEM image restoration technique reveals precise data concerning lattice distortions present in these crystals. More complex structures, such as those derived from 3D complex, layered and chain halides form related crystal structures within SWNTs. In narrow SWNTs (i.e. with diameters less than ca. 1.6 nm), structures consisting of individual 1D polyhedral chains (1D-PHCs) were obtained that were derived from the corresponding bulk halides structures. In the case of infinite 3D network and layered halides, the 1D polyhedral chains form with lower co-ordinations than in the bulk. Molecular halides also intercalate into SWNTs but these do not readily form organised structures within SWNTs.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 633: Symposium A – Nanotubes and Related Materials , 2000 , A14.31
Copyright
Copyright © Materials Research Society 2001

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References

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