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

Autor(en)

Hans Kuzmany, Lei Shi, Thomas Pichler, Jenö Kürti, János Koltai, F Hof, Takeshi Saito

Abstrakt

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(en)

Elektronische Materialeigenschaften

Externe Organisation(en)

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

Band

252

Seiten

2530–2535

Anzahl der Seiten

6

ISSN

0370-1972

DOI

https://doi.org/10.1002/pssb.201552303

Publikationsdatum

11-2015

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/e00919d6-a121-458d-a50e-deafc5166ffa