Low-temperature encapsulation of coronene in carbon nanotubes
Article first published online: 19 NOV 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
physica status solidi (b)
Volume 249, Issue 12, pages 2432–2435, December 2012
How to Cite
Botka, B., Füstös, M. E., Klupp, G., Kocsis, D., Székely, E., Utczás, M., Simándi, B., Botos, Á., Hackl, R. and Kamarás, K. (2012), Low-temperature encapsulation of coronene in carbon nanotubes. Phys. Status Solidi B, 249: 2432–2435. doi: 10.1002/pssb.201200349
- Issue published online: 4 DEC 2012
- Article first published online: 19 NOV 2012
- Manuscript Accepted: 14 SEP 2012
- Manuscript Revised: 1 AUG 2012
- Manuscript Received: 10 JUN 2012
Coronene was encapsulated in single-walled carbon nanotubes (SWNT) by vapor-phase filling at high (450 °C) and low (385 °C) temperature and by nanoextraction from supercritical carbon dioxide. The presence of coronene inside the tubes was demonstrated indirectly via the formation of double-walled nanotubes (DWNT). To this end several subsequent annealing steps were applied and monitored by Raman spectroscopy. Our results show that the encapsulation is successful with all three methods. However, high-temperature vapor filling produces adsorbed dicoronylene, the dimerized form of coronene, as a side reaction. In order to avoid dicoronylene contamination, we suggest to use low-temperature methods for the production of coronene-filled carbon nanotubes.
Coronene (top) and dicoronylene (bottom) molecules.