The origin of nondispersive Raman lines in the D-band region for ferrocene@HiPco SWCNTs transformed at high temperatures

H. Kuzmany, L. Shi, T. Pichler, J. Kürti, J. Koltai, F. Hof, T. Saito

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Small diameter single-walled carbon nanotubes can be filled with carbon-rich molecules if the latter are small enough. For HiPco tubes ferrocene turned out to be appropriate. After filling and high temperature treatment (transformation) new Raman lines are observed. Here we show that these lines appear also for small diameter DIPS tubes after similar temperature treatment and that all new lines originate from one special molecule. This molecule has a C=C stretch vibration at 1597cm-1 observed on top of the G-line components of the tubes. Mass spectra from the transformed tube material revealed compounds with masses of the order of 500-750Da which are typical for large organic molecules. Experiments with isotope labeled ferrocene showed characteristic changes of the Raman response which extend beyond the consequences of a simple change of atomic masses. DFT calculations using B3LYP functionals revealed that narrow width and short length carbon nanoribbons such as quaterrylene or dimeric PTCDA are possible candidates for the new molecules.

Original languageEnglish
Pages (from-to)2530-2535
Number of pages6
JournalPhysica Status Solidi (B) Basic Research
Volume252
Issue number11
DOIs
Publication statusPublished - Nov 1 2015

Fingerprint

Molecules
tubes
molecules
Carbon
Temperature
Nanoribbons
Carbon Nanotubes
atomic weights
carbon
Single-walled carbon nanotubes (SWCN)
Discrete Fourier transforms
functionals
Isotopes
mass spectra
isotopes
carbon nanotubes
ferrocene
vibration
temperature
Experiments

Keywords

  • Carbon nanotubes
  • Functionalization
  • Nanoribbons
  • Raman scattering
  • SWCNT

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

The origin of nondispersive Raman lines in the D-band region for ferrocene@HiPco SWCNTs transformed at high temperatures. / Kuzmany, H.; Shi, L.; Pichler, T.; Kürti, J.; Koltai, J.; Hof, F.; Saito, T.

In: Physica Status Solidi (B) Basic Research, Vol. 252, No. 11, 01.11.2015, p. 2530-2535.

Research output: Contribution to journalArticle

Kuzmany, H. ; Shi, L. ; Pichler, T. ; Kürti, J. ; Koltai, J. ; Hof, F. ; Saito, T. / The origin of nondispersive Raman lines in the D-band region for ferrocene@HiPco SWCNTs transformed at high temperatures. In: Physica Status Solidi (B) Basic Research. 2015 ; Vol. 252, No. 11. pp. 2530-2535.
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