An encapsulated helical one-dimensional cobalt iodide nanostructure.
Single-walled carbon nanotubes (SWNTs) can be used as templates for the growth of low-dimensional inorganic materials whose structures and properties often differ greatly from those of the bulk. Here we describe the detailed crystallography of an entire helical one-dimensional cobalt diiodide nanostructure encapsulated within a SWNT. This material has an unprecedented twisted double tetrahedral chain structure arising from a rotation of Co(2)I(4) units along its length. The complete nanostructure comprises two distinct regions with oppositely handed helices separated by a short disordered region. The encapsulating SWNT shows a commensurate ovoid distortion reflecting an unexpectedly strong interaction between the nanostructure and the SWNT.
Philp
Eilidh
E
Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
Sloan
Jeremy
J
Kirkland
Angus I
AI
Meyer
Rüdiger R
RR
Friedrichs
Steffi
S
Hutchison
John L
JL
Green
Malcolm L H
ML
D003035:Cobalt / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000295:instrumentation / Q000379:methods*; D003461:Crystallography / Q000379:methods*; D007454:Iodides / Q000737:chemistry*; D046911:Macromolecular Substances; D008855:Microscopy, Electron, Scanning; D008958:Models, Molecular; D008968:Molecular Conformation; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013499:Surface Properties
D007454:Iodides; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D003035:Cobalt