Temperature dependence of the electrical conductivity of some conjugated polyazomenthines

The temperature dependence of the electrical conductivity (sigma) of six conjugated polyazomethines was studied in the temperature range (303-423 K). A plot of log(sigma) versus (1/T) reveals two regions with an inflection point at the glass transition temperature T9 of the polymers. Below Tg the co...

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Bibliographic Details
Published in:Journal of Optoelectronics and Advanced Materials 2007-07, Vol.9 (7), p.2075-2077
Main Authors: Al-Shawabkeh, A F, Al-Wahab, H A, Shahab, Y A
Format: Article
Language:English
Online Access:Get full text
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Summary:The temperature dependence of the electrical conductivity (sigma) of six conjugated polyazomethines was studied in the temperature range (303-423 K). A plot of log(sigma) versus (1/T) reveals two regions with an inflection point at the glass transition temperature T9 of the polymers. Below Tg the conductivity is not very sensitive to change in temperature, while the sensitivity increases above Tg. This behavior is explained as a consequence of the effect of the different types of motions of the polymeric chains below and above Tg on the conductivity of the polymers.
ISSN:1454-4164