Spin probe ESR studies of dynamics of single walled carbon nanotubes

A. K. Dhami, Shrivalli Bhat, Ajay Sharma, S. V. Bhat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)1178-1182
Number of pages5
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Issue number4
StatePublished - Apr 2008


  • Carbon nanotubes
  • ESR
  • Low temperature
  • Spin probe

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy


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