Thermal stability and high temperature graphitization of bisazafullerene (C59N)2 as studied by IR and Raman spectroscopy

Matthias Krause, Silvia Baes-Fischlmair, Rudolf Pfeiffer, Wolfgang Plank, Thomas Pichler, Hans Kuzmany, Nikos Tagmatarchis, Kosmas Prassides

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10 Citations (Scopus)

Abstract

Thermal stability and high-temperature degradation of pristine bisazafullerene (C59N)2 were analyzed by infrared and Raman spectroscopy in the temperature range from 300 to 745 K. The spectra showed a reversible temperature dependence up to 550 K. For higher temperatures an irreversible degradation into disordered graphite was found. Approximately 55% of the material resisted a thermal treatment of 745 K for several hours. A mechanism involving a low stationary concentration of C59N° monomer radical species and a slow graphitization is proposed for the thermolysis of the material. The remarkable thermal stability of pristine bisazafullerene (C59N)2 is ascribed to the low stability of the C59N° monomer radical species, the high activation energy for graphitization, and the absence of other reaction partners under high vacuum conditions.

Original languageEnglish
Pages (from-to)11964-11969
Number of pages6
JournalJournal of Physical Chemistry B
Volume105
Issue number48
DOIs
Publication statusPublished - 2001 Dec 6

ASJC Scopus subject areas

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

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    Krause, M., Baes-Fischlmair, S., Pfeiffer, R., Plank, W., Pichler, T., Kuzmany, H., Tagmatarchis, N., & Prassides, K. (2001). Thermal stability and high temperature graphitization of bisazafullerene (C59N)2 as studied by IR and Raman spectroscopy. Journal of Physical Chemistry B, 105(48), 11964-11969. https://doi.org/10.1021/jp012186+