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Modification of Electrical and Mechanical Properties of Single Wall Carbon Nanotubes by Reaction with SOCl2

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Abstract

Attaching chemical functional groups to single wall carbon nanotubes (SWNTs) has been achieved by chemical methods. Oxidized purified nanotubes have been treated by thionyl chloride in order to convert carboxyl groups into acylchloride groups. We observe by XPS and EDX that not only chlorine atoms but sulphur containing functional groups are covalently bound to the nanotubes. This chemical functionalization also causes significant changes in the electrical and mechanical properties of the nanotubes. The electrical conductivity measured on mats (bucky paper) increases from 500 S/cm in pristine tubes to 2500 S/cm in modified tubes. Similarly, the Young’s modulus of bucky paper increases by about 100 %.

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Authors and Affiliations

  1. Max-Planck-Institute for Solid State Research, Heisenberg Str. 1, 70569, Stuttgart, Germany

    Urszula Dettlaff-Weglikowska, Viera Skakalova & Siegmar Roth

  2. Institute of Technical Physics, University of Erlangen, Erwin-Rommel Str. 1, 91058, Erlangen, Germany

    Ralf Graupner & Lothar Ley

Authors
  1. Urszula Dettlaff-Weglikowska
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  2. Viera Skakalova
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  3. Ralf Graupner
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  4. Lothar Ley
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  5. Siegmar Roth
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Dettlaff-Weglikowska, U., Skakalova, V., Graupner, R. et al. Modification of Electrical and Mechanical Properties of Single Wall Carbon Nanotubes by Reaction with SOCl2. MRS Online Proceedings Library 772, 31 (2003). https://doi.org/10.1557/PROC-772-M3.1

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  • DOI: https://doi.org/10.1557/PROC-772-M3.1

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