TITLE

Electrical conductivity of a single conducting polyaniline nanotube

AUTHOR(S)
Yunze Long; Zhaojia Chen; Nanlin Wang; Yongjun Ma; Ze Zhang; Lijuan Zhang; Meixiang Wan
PUB. DATE
September 2003
SOURCE
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1863
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the electrical properties of a single conducting polyaniline nanotube measured by a standard four-terminal technique. Camphor sulfonic acid doped polyaniline nanotubes were self-assembled by a template-free method. The directly measured conductivity of the single polyaniline nanotube is very high (∼31.4 S/cm), and its temperature dependence follows the three-dimensional variable range hopping model. However, the bulk conductivity of the polyaniline nanotube pellets is much smaller than the nanotube itself (only 3.5×10[sup -2] S/cm) and ln ρ(T) is linear in T[sup -1/2], which is due to the large intertubular contact resistance. These results will help us to understand the conduction mechanism in conducting polymers. © 2003 American Institute of Physics.
ACCESSION #
10664995

 

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