Abstract
The local magnetic properties of the one dimensional inner space of the nanotubes are investigated using 13C nuclear magnetic resonance spectroscopy of encapsulated fullerene molecules inside single walled carbon nanotubes. Isotope engineering and magnetically purified nanotubes have been advantageously used on our study to discriminate between the different diamagnetic and paramagnetic shifts of the resonances. Ring currents originating from the π electrons circulating on the nanotube, are found to actively screen the applied magnetic field by -36.9 ppm. Defects and holes in the nanotube walls cancel this screening locally. What is interesting, that at high magnetic fields, the modifications of the NMR resonances of the molecules from free to encapsulated can be exploited to determine some structural characteristics of the surrounding nanotubes, never observed experimentally.
| Original language | English |
|---|---|
| Pages (from-to) | 740-742 |
| Number of pages | 3 |
| Journal | Physica B: Condensed Matter |
| Volume | 407 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Feb 15 2012 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
NMR strategies to study the local magnetic properties of carbon nanotubes. / Abou-Hamad, E.; Kim, Y.; Bouhrara, M.; Saih, Y.; Wågberg, T.; Luzzi, D. E.; Goze-Bac, C.
In: Physica B: Condensed Matter, Vol. 407, No. 4, 15.02.2012, p. 740-742.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - NMR strategies to study the local magnetic properties of carbon nanotubes
AU - Abou-Hamad, E.
AU - Kim, Y.
AU - Bouhrara, M.
AU - Saih, Y.
AU - Wågberg, T.
AU - Luzzi, D. E.
AU - Goze-Bac, C.
PY - 2012/2/15
Y1 - 2012/2/15
N2 - The local magnetic properties of the one dimensional inner space of the nanotubes are investigated using 13C nuclear magnetic resonance spectroscopy of encapsulated fullerene molecules inside single walled carbon nanotubes. Isotope engineering and magnetically purified nanotubes have been advantageously used on our study to discriminate between the different diamagnetic and paramagnetic shifts of the resonances. Ring currents originating from the π electrons circulating on the nanotube, are found to actively screen the applied magnetic field by -36.9 ppm. Defects and holes in the nanotube walls cancel this screening locally. What is interesting, that at high magnetic fields, the modifications of the NMR resonances of the molecules from free to encapsulated can be exploited to determine some structural characteristics of the surrounding nanotubes, never observed experimentally.
AB - The local magnetic properties of the one dimensional inner space of the nanotubes are investigated using 13C nuclear magnetic resonance spectroscopy of encapsulated fullerene molecules inside single walled carbon nanotubes. Isotope engineering and magnetically purified nanotubes have been advantageously used on our study to discriminate between the different diamagnetic and paramagnetic shifts of the resonances. Ring currents originating from the π electrons circulating on the nanotube, are found to actively screen the applied magnetic field by -36.9 ppm. Defects and holes in the nanotube walls cancel this screening locally. What is interesting, that at high magnetic fields, the modifications of the NMR resonances of the molecules from free to encapsulated can be exploited to determine some structural characteristics of the surrounding nanotubes, never observed experimentally.
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UR - http://www.scopus.com/inward/citedby.url?scp=84855894597&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2011.12.012
DO - 10.1016/j.physb.2011.12.012
M3 - Article
VL - 407
SP - 740
EP - 742
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 4
ER -