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

Published online by Cambridge University Press:  15 February 2011

Urszula Dettlaff-Weglikowska ,
Viera Skakalova ,
Ralf Graupner ,
Lothar Ley  and
Siegmar Roth
Urszula Dettlaff-Weglikowska
Affiliation:
Max-Planck-Institute for Solid State Research, Heisenberg Str. 1, 70569 Stuttgart, Germany
Viera Skakalova
Affiliation:
Max-Planck-Institute for Solid State Research, Heisenberg Str. 1, 70569 Stuttgart, Germany
Ralf Graupner
Affiliation:
Institute of Technical Physics, University of Erlangen, Erwin-Rommel Str. 1, 91058 Erlangen, Germany
Lothar Ley
Affiliation:
Institute of Technical Physics, University of Erlangen, Erwin-Rommel Str. 1, 91058 Erlangen, Germany
Siegmar Roth
Affiliation:
Max-Planck-Institute for Solid State Research, Heisenberg Str. 1, 70569 Stuttgart, Germany
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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 %.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 772: Symposium M – Nanotube-Based Devices , 2003 , M3.1
Copyright
Copyright © Materials Research Society 2003

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References

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