Spin probe ESR studies of dynamics of single walled carbon nanotubes

Dhami, AK and Bhat, Shrivalli and Sharma, Ajay and Bhat, SV (2008) Spin probe ESR studies of dynamics of single walled carbon nanotubes. In: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 69 (4). pp. 1178-1182.

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Abstract

The highly sensitive technique of spin-probe Electron Spin Resonance (ESR) has been used to study dynamics of carbon nanotubes. The ESR signals were recorded for the nitroxide free radical TEMPO in carbon nanotubes from 5 to 300 K. The onset of the fast dynamics of the probe molecule was indicated by appearance of a narrow triplet at 230 K. The ESR measurements were also done on TEMPO in methanol for the comparative studies in the same temperature range, and in the latter observations, no change in spectra was seen around 230 K. The results indicate the occurrence of a change in the dynamics of carbon nanotubes around this temperature.

Item Type:	Journal Article
Publication:	Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier
Keywords:	Carbon nanotubes;ESR;Low temperature;Spin probe
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	21 May 2008
Last Modified:	19 Sep 2010 04:45
URI:	http://eprints.iisc.ac.in/id/eprint/14024

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