Original Paper

EPR characterization of catalyst-free SWNT and N@C60-based peapods

  1. B. Corzilius1,*,
  2. A. Gembus1,
  3. N. Weiden1,
  4. K.-P. Dinse1,
  5. K. Hata2

Article first published online: 9 AUG 2006

DOI: 10.1002/pssb.200669115

Issue

physica status solidi (b)

physica status solidi (b)

Special Issue: Electronic Properties of Novel Materials

Volume 243, Issue 13, pages 3273–3276, November 2006

Additional Information

How to Cite

Corzilius, B., Gembus, A., Weiden, N., Dinse, K.-P. and Hata, K. (2006), EPR characterization of catalyst-free SWNT and N@C60-based peapods. Phys. Status Solidi B, 243: 3273–3276. doi: 10.1002/pssb.200669115

Author Information

  1. 1

    Chemistry Department, Darmstadt University of Technology, Petersenstraße 20, 64287 Darmstadt, Germany

  2. 2

    AIST, Tsukuba Central 5, Tsukuba 305-8565, Japan

*Phone: +49 6151 16 2796, Fax: +49 6151 16 4347

Publication History

  1. Issue published online: 23 OCT 2006
  2. Article first published online: 9 AUG 2006
  3. Manuscript Accepted: 20 JUN 2006
  4. Manuscript Revised: 18 MAY 2006
  5. Manuscript Received: 18 APR 2006

Funded by

  • Deutsche Forschungsgemeinschaft. Grant Number: Di182/24

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Keywords:

  • 73.22.−f;
  • 73.63.Fg;
  • 76.30.Pk

Abstract

Single Wall Carbon Nanotubes (SWNT) produced by “Super-Growth” CVD technique show no evidence for non-carbon impurities. At X-Band frequencies an EPR signal from conduction electrons is observed at room temperature. At low temperatures the conduction electrons get trapped, leading to a sharp EPR signal with long-lived spin states. Using multi pulse techniques the hyperfine interaction to 13C can be resolved. Using low temperature liquid phase filling techniques, it is possible to prepare N@C60@SWNT with filling efficiencies of a few percent. At elevated temperatures, the fullerenes show a quite mobile behavior, especially in SWNT of wide diameter. This motion continuously slows down at lower temperatures resulting in complete immobilization. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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