TITLE

Synthesis and electrical properties of freestanding film of azobenzene side-chain polyaniline

AUTHOR(S)
Yunze Long; Zhaojia Chen; Kun Huang; Meixiang Wan
PUB. DATE
March 2004
SOURCE
Applied Physics Letters;3/15/2004, Vol. 84 Issue 11, p1898
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the electrical properties of a conducting polyaniline (PANI) derivative film containing azobenzene side chain. The freestanding thin film of HCl-doped PANI derivative was synthesized through an N-alkyl-substituted reaction. We found that the side of the film irradiated by a weak ultraviolet light during the preparation is a poor conductor at room temperature and shows abnormal V–I characteristics. Its resistance decreases sharply with increasing temperature. However, the other side of the film without irradiation is highly conductive. The room-temperature conductivity is about 1.2 S/cm, which is much higher than that of other N-alkyl-substituted polyanilines (10[sup -2]–10[sup -7] S/cm). The temperature dependence of resistance follows one-dimensional variable-range hopping model. © 2004 American Institute of Physics.
ACCESSION #
12512686

 

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