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Sonochemical Optimization of the Conductivity of Single Wall Carbon Nanotube Networks
Author(s) -
Kaempgen M.,
Lebert M.,
Haluska M.,
Nicoloso N.,
Roth S.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200702873
Subject(s) - materials science , carbon nanotube , conductivity , covalent bond , nanotechnology , sonochemistry , carbon fibers , chemical engineering , composite material , organic chemistry , composite number , chemistry , engineering
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.