Helical superstructures of fullerene peapods and empty single-walled carbon nanotubes formed in water

Naotoshi Nakashima, Yasuhiko Tanaka, Yasuhiko Tomonari, Hiroto Murakami, Hiromichi Kataura, Takahiro Sakaue, Kenichi Yoshikawa

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Abstract

Aqueous dispersions of fullerene C70-filled carbon nanotubes (C70@SWNTs or peapods) and empty single-walled carbon nanotubes (empty SWNTs) were prepared with the aid of trimethyl-(2-oxo-2-pyrene-1-yl- ethyl)-ammonium bromide (1), which is a carbon nanotube solubilizer. This is the first report describing the preparation and characterization of the transparent dispersion/dissolution of the peapods. The UV - vis - near-IR spectra of C 70@SWNTs-1 and empty SWNTs-1 were almost identical. We found by means of transmission electron microscopy and atomic force microscopy that the empty SWNTs and C70-peapods form helical nanostructures in the shapes of rings, irregular rings, lassos, handcuffs, catenanes, pseudorotaxanes, and figure-eight structures. The mechanism of the superstructure formation has been discussed in relation to the unique characteristics of stiff polymer chains with the aid of an off-lattice Monte Carlo simulation.

Original languageEnglish
Pages (from-to)13076-13082
Number of pages7
JournalJournal of Physical Chemistry B
Volume109
Issue number27
DOIs
Publication statusPublished - Jul 14 2005

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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    Nakashima, N., Tanaka, Y., Tomonari, Y., Murakami, H., Kataura, H., Sakaue, T., & Yoshikawa, K. (2005). Helical superstructures of fullerene peapods and empty single-walled carbon nanotubes formed in water. Journal of Physical Chemistry B, 109(27), 13076-13082. https://doi.org/10.1021/jp050958m