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Temperature dependence of the electrical conductivity of some conjugated polyazomenthines

A. F. AL-SHAWABKEH1, H. A. AL-WAHAB2, Y. A. SHAHAB2,*

Affiliation

  1. Amman College for Engeenering Technology, Al-Balaqa Applied University, Amman, Jordan
  2. Chemistry Department, College of Science, Mosul University, Mosul, Iraq

Abstract

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

Keywords

Conjugated polyazomethines, Electrical conductivity, Temperature dependence, Glass transition temperature, Molecular motion.

Submitted at: March 6, 2007
Accepted at: July 15, 2007

Citation

A. F. AL-SHAWABKEH, H. A. AL-WAHAB, Y. A. SHAHAB, Temperature dependence of the electrical conductivity of some conjugated polyazomenthines, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 7, pp. 2075-2077 (2007)