Sonochemical Optimization of the Conductivity of Single Wall Carbon Nanotube Networks

Networks of single‐wall carbon nanotubes (SWCNTs) are covalently functionalized with oxygen‐containing groups. In lower concentration, these functional groups act as stable dopands improving the conductivity of the SWCNT material. In higher concentration however, their role as defects with a certain...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2008-02, Vol.20 (3), p.616-620
Main Authors: Kaempgen, M., Lebert, M., Haluska, M., Nicoloso, N., Roth, S.
Format: Article
Language:English
Subjects:
Carbon nanotubes
Conductivity
Network structures
Sonochemistry
Structure-property relationships
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Summary:Networks of single‐wall carbon nanotubes (SWCNTs) are covalently functionalized with oxygen‐containing groups. In lower concentration, these functional groups act as stable dopands improving the conductivity of the SWCNT material. In higher concentration however, their role as defects with a certain scattering potential becomes dominant, decreasing the conductivity of the CNT material. These effects lead to a trade‐off in the number of functional groups which has been investigated using time‐dependent sonochemistry.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200702873