A study of a thienylene–phenylene polyazomethine and its copper complex
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- 作者：Khalid ; Maarib A. ; El-Shekeil ; Ali G. ; Al-Yusufy ; Fatma A.
- 关键词：Polyazomethines ; Polymer-complex ; DC conductivity ; Doping ; Conformers
- 刊名：European Polymer Journal
- 出版年：2001
- 出版时间：July, 2001
- 年：2001
- 卷：37
- 期：7
- 页码：1423-1431
- 全文大小：214 K
文摘
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 and <sup>1sup>H 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.