Optical properties and charge transfer effects in single-walled carbon nanotubes filled with functionalized adamantane molecules

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)87-97
Number of pages11
JournalCarbon
Volume109
Publication statusPublished - 1 Nov 2016
MoE publication typeA1 Journal article-refereed

Researchers

  • A. A. Tonkikh
  • D. V. Rybkovskiy
  • A. S. Orekhov
  • A. I. Chernov
  • A. A. Khomich
  • C. P. Ewels
  • Esko Kauppinen

  • S. B. Rochal
  • A. L. Chuvilin
  • E. D. Obraztsova

Research units

  • Southern Federal University
  • Russian Research Centre Kurchatov Institute
  • Moscow Engineering Physics Institute
  • RAS - General Physics Institute
  • Institut des Materiaux Jean Rouxel
  • Basque Foundation for Science

Abstract

The filling of single-walled carbon nanotube films with 1-adamantanemethanol and 1-bromoadamantane molecules was carried out by a gas-phase procedure. Optical absorption and Raman spectroscopies revealed the effects of charge transfer for samples treated with 1-bromoadamantane. Using density functional simulations we show that the charge transfer takes place when bromine is detached from the carbon cage and accepts electrons as free-standing atoms or as polybromide structures. Transmission electron microscope images confirm the presence of individual bromine atoms inside carbon nanotubes, treated with 1-bromoadamantane molecules. The observed charge transfer is, therefore, a marker of the dehalogenization reaction, a critical step in the synthesis process of narrow 1D sp3 nanostructures.

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