The origin of nondispersive Raman lines in the D‐band region for ferrocene@HiPco SWCNTs transformed at high temperatures
- Author(s)
- Hans Kuzmany, Lei Shi, Thomas Pichler, Jenö Kürti, János Koltai, F Hof, Takeshi Saito
- 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
1597 cm
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 500–750 Da 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.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Eötvös Loránd University Budapest, National Institute of Advanced Industrial Science and Technology (AIST)
- Journal
- Physica Status Solidi. B: Basic Research
- Volume
- 252
- Pages
- 2530–2535
- No. of pages
- 6
- ISSN
- 0370-1972
- DOI
- https://doi.org/10.1002/pssb.201552303
- Publication date
- 11-2015
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103015 Condensed matter
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Condensed Matter Physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/the-origin-of-nondispersive-raman-lines-in-the-dband-region-for-ferrocenehipco-swcnts-transformed-at-high-temperatures(e00919d6-a121-458d-a50e-deafc5166ffa).html