Structural Properties of Polythiophene Doped with FeCl3

Deepali Kelkar and Ashish Chourasia
Department of Physics, Institute of Science, Civil Lines, Nagpur – 440 001, India;
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Polythiophene is chemically synthesized and doped with FeCl3 for 2.5, 5 and 10 h. For structural investigation all samples have been characterized using different techniques. The results of elemental analysis show that with the increase of doping duration the Fe content increases while the S content decreases. FTIR spectrum reveals the complex formation between FeCl3 and polythiophene. UV-Visible results have been used to calculate band gap energy. Analysis of XRD shows that after polythiophene doping by FeCl3 some modifications in crystal structure and increase in crystallinity take place. Morphological studies using SEM have been carried out. TGA-DTA results indicate the reduction in Tg values with the increase in dopant concentration as well as increase in thermal stability due to doping.

[1] Kareiyama I.: [in:] Nalwa H. (Ed.), Handbook of Conductive Molecules and Polymers. V.2. Wiley, New York 1997.

[2] Kaneto K., Kohno Y., Yoshino K. and Inuishi Y.: J. Chem. Soc. Chem. Commun., 1983, 382.

[3] Roncali J.: Chem. Rev., 1992, 92, 711.

[4] Yamamoto T., Sanechika K. and Yamamoto A.: J. Polym. Sci. Polym. Lett. Ed., 1984, 8, 9.

[5] Kitao S., Seto M., Maeda Y., Matsuyama T. et al.: J. Phys. Soc. Jpn., 1997, 66, 1195.

[6] Qiao X., Wang X. and Mo Z.: Synth. Met., 2001, 122, 449.

[7] Kuo C., Wakim F., Sengupta S. and Tripathy S.: Jpn. J. Appl. Phys., 1994, 33, 2629.

[8] Tada K., Wada M. and Onada M.: J. Phys. D, Appl. Phys., 2003, 36, L70.

[9] Tourillion G.: [in:] Skotheim T. (Ed.), Handbook of Conducting Polymers. Marcel Dekker, New York 1986.

[10] Zotti G. and Schiavon G.: J. Electroanal. Chem., 1984, 163, 385.

[11] Pavia D., Lampman G. and Kriz G.: Introduction to Spectroscopy, 3rd edn. Thomson Brooks/Cole, Chennai 2007.

[12] Bredas J., Themans B., Fripiat J. and Andre J.: Phys. Rev. B, 1984, 29, 6761.

[13] Miller F. and Wilkins C.: Infrared Spectra of Inorganic and Coordination Compounds, 1st edn. Wiley- Interscince, New York 1969.

[14] Yamamoto T., Kanbara T. and Mori C.: Synth. Met., 1990, 38, 399.

[15] McCullogh R.: Adv. Mater., 1998, 10, 93.<93::AID-ADMA93>3.0.CO;2-F

[16] Manjunath B., Venkataraman A. and Stephen T.: J. Appl. Polym. Sci., 1973, 17, 1091.

[17] Tager A.: The Physical Chemistry of Polymers, 1st edn. Mir, Moscow 1972.

[18] Kargin V., Kozlov P., Asimova R. and Ananyeva L.: Doklady. Akad. Nauk. SSSR, 1960, 135, 357.