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Polyfuran constitutes polymer belong the conjugated systems which have been pointed out functionalized properties in the electronic and optic fields. In the present paper, experiment and theoretical analysis on Polyfuran with his oligomers have been reported .The interpretation of the infrared and Raman spectra of Polyfuran is presented. In order to discuss the functional properties of oligofurans, we used Density Functional Theory methods and carried out DFT calculations to determinate their electronic, electrochemical and absorption properties. The efficient low band gap allows furanbased polymers to be promising organic materials in photovoltaic application, also the oxygen-based conjugated materials constitute more biodegradable conducting compounds especially for solar cells compared to Sulfur or Selenium.

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The copolymer based on Poly(3, 4-Ethylene dioxythiophen) and Poly(n-Vinylcarbazole) was characterized by FTIR and Raman spectroscopy. The temperature and frequency evolutions of dielectric parameters are also plotted and studied. The dependence of ε” on the temperature shows relaxation process for studied copolymer especially with frequencies about 1kHz for the temperatures: 90°C < T < 118°C. The values of ε’∞, ε’’MAX, relaxation time and DC conductivity corresponding to the copolymer are also determined with the aim to provide dielectric analysis involving vital information about this new polymeric compound.