Toward synthesis and characterization of unconventional C66 and C68 fullerenes inside carbon nanotubes

Viktor Zólyomi, Herwig Peterlik, Johannes Bernardi, Mónika Bokor, István László, János Koltai, Jenó Kúrti, Martin Knupfer, Hans Kuzmany, Thomas Pichler, Ferenc Simon

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6 Citations (Scopus)


We present compelling evidence pointing to the possible synthesis of unconventional C66 and C68 fullerenes in the interior of single-walled carbon nanotubes. The production proceeds from C60-toluene/benzene clathrates encapsulated inside the nanotubes using heat-driven nanotesttube chemistry. All isomers violate the so-called isolated pentagon rule and are stabilized solely by the proximity of the wall of the host nanotube. We present detailed characterization of the unconventional fullerenes using Raman spectroscopy, 13C isotope labeling of the benzene molecules, transmission electron microscopy, X-ray diffractometry, and first-principles calculations. Multiple isomers of both C66 and C68 are identified in the sample. We argue that our method opens the way to high-yield synthesis of unconventional fullerenes.

Original languageEnglish
Pages (from-to)30260-30268
Number of pages9
JournalJournal of Physical Chemistry C
Issue number51
Publication statusPublished - Dec 26 2014

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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    Zólyomi, V., Peterlik, H., Bernardi, J., Bokor, M., László, I., Koltai, J., Kúrti, J., Knupfer, M., Kuzmany, H., Pichler, T., & Simon, F. (2014). Toward synthesis and characterization of unconventional C66 and C68 fullerenes inside carbon nanotubes. Journal of Physical Chemistry C, 118(51), 30260-30268.