A study of a thienylene-phenylene polyazomethine and its copper complex

  • Khalid M
  • El-Shekeil A
  • Al-Yusufy F
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Abstract

Polycondensation of terephthaldehyde and 2,5-diamino-3,4-dicyanothiophene is carried out to synthesize a thienylene-phenylene polyazomethine. A study of the polyazomethine and its Cu complex is performed. This includes elemental analyses, FTIR and UV-VIS spectra, solubility, inherent viscosity, X-ray diffraction analysis and1H NMR. Thermal analyses (TGA and DSC) are also performed. The bulk DC electrical conductivity behavior of the pristine and Cu-complex polyazomethine is measured as a function of temperature in the range 300-500 K. The polyazomethine is subjected to semi-empirical calculations for the two (anti/gauche) conformers. A model is proposed based on the band theory to explain the bulk DC electrical conductivity behavior. © 2001 Elsevier Science Ltd.

Author-supplied keywords

  • Conformers
  • DC conductivity
  • Doping
  • Polyazomethines
  • Polymer-complex

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Authors

  • Maarib A. Khalid

  • Ali G. El-Shekeil

  • Fatma A. Al-Yusufy

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