Synthesis of carbon-encapsulated nanowires using polycyclic aromatic hydrocarbon precursors

J. Y. Dai, J. M. Lauerhaas, A. A. Setlur, Robert P. H. Chang

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A method using polycyclic aromatic hydrocarbon (PAH) precursors for synthesizing carbon nanotubes filled with pure copper or germanium is reported. A model is proposed where the interaction of small copper or germanium clusters with PAH molecules is shown to form carbon-encapsulated nanowires. The validity of this model is demonstrated by showing that filled nanotubes are formed in a hydrogen arc which produces PAH molecules when graphite electrodes are used. Alternatively, we have also used pyrene (C16H10), a PAH molecule, to grow encapsulated nanowires directly. No filled nanotubes are found in a helium arc which does not generate PAHs.

Original languageEnglish
Pages (from-to)547-553
Number of pages7
JournalChemical Physics Letters
Issue number5-6
Publication statusPublished - Aug 23 1996


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

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