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The effects of doping additives on the conductivities of Poly(3,4-ethylenedioxythiophene)

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Author Affiliations

  • 1Department of Physics H.P.T. Arts and R.Y.K. Science College, Nasik-422 005, India
  • 2Electronic Science Dept., H.P.T. Arts and R.Y.K. Science College, Nashik-422 005, India and Department of Physics H.P.T. Arts and R.Y.K. Science College, Nasik-422 005, India
  • 3Department of Physics, Govt. Institute of Science, Nagpur

Res. J. Material Sci., Volume 11, Issue (2), Pages 1-5, August,16 (2023)

Abstract

The polymer Poly (3,4-ethylenedoixythiophene) (PEDOT) underwent a chemical synthesis process and was subsequently doped with FeCl3 and Camphor Sulfonic Acid (CSA). The utilization of FTIR analysis verified the successful synthesis of PEDOT, as well as the desired doping with FeCl3 and CSA. The crystal structure of the samples was analysed using XRD, revealing modifications following doping. Additionally, the XRD results allowed for the calculation of sample crystallinity, which increased after doping with FeCl3, but decreased after doping with CSA. Using the four-probe method, electrical conductivity (σ) measurements were obtained, showing a significant increase in conductivity after doping with both FeCl3 and CSA, with the undoped sample having a conductivity of 3.41X10-3S/cm. A plot of Log σ versus 1/T was created, revealing that the undoped PEDOT had metallic characteristics above 308̊K, while both doped samples displayed semiconducting behaviour in the temperature range from ambient to 383̊ K. An apparatus similar to Lee's method was used for measuring the thermal conductivity, which revealed that all samples exhibited comparatively small thermal conductivity values. However, these values were found to increase upon doping and with a rise in temperature.

References

  1. Zhan, L., Song, Z., Zhang, J., Tang, J., Zhan, H., Zhou, Y., & Zhan, C. (2008)., PEDOT: Cathode active material with high specific capacity in novel electrolyte system., Electrochimica Acta, 53(28), 8319-8323.
  2. Wang, Y., Jia, W., Strout, T., Ding, Y., & Lei, Y. (2009)., Preparation, characterization and sensitive gas sensing of conductive core-sheath TiO2-PEDOT nanocables., Sensors, 9(9), 6752-6763.
  3. Louwet, F., Groenendaal, L., Dhaen, J., Manca, J., Van Luppen, J., Verdonck, E., & Leenders, L. (2003)., PEDOT/PSS: synthesis, characterization, properties and applications., Synthetic Metals, 135(1), 115-118.
  4. Groenendaal, L., Zotti, G., Aubert, P. H., Waybright, S. M., & Reynolds, J. R. (2003)., Electrochemistry of poly (3, 4‐alkylenedioxythiophene) derivatives., Advanced Materials, 15(11), 855-879.
  5. Bashir, T., Ali, M., Cho, S. W., Persson, N. K., & Skrifvars, M. (2013)., OCVD polymerization of PEDOT: effect of pre‐treatment steps on PEDOT‐coated conductive fibers and a morphological study of PEDOT distribution on textile yarns., Polymers for advanced technologies, 24(2), 210-219.
  6. Bashir, T., Ali, M., Cho, S. W., Persson, N. K., & Skrifvars, M. (2013)., OCVD polymerization of PEDOT: effect of pre‐treatment steps on PEDOT‐coated conductive fibers and a morphological study of PEDOT distribution on textile yarns., Polymers for advanced technologies, 24(2), 210-219.
  7. Chourasia, A. B. (2016)., Thermal Conductivity of Poly., Research Journal of Material Sciences, 4(6), 1-5.
  8. Meng, H., Perepichka, D. F., Bendikov, M., Wudl, F., Pan, G. Z., Yu, W., ... & Brown, S. (2003)., Solid-state synthesis of a conducting polythiophene via an unprecedented heterocyclic coupling reaction., Journal of the American Chemical Society, 125(49), 15151-15162.
  9. Yamamoto, T., & Abla, M. (1999)., Synthesis of non-doped poly (3, 4-ethylenedioxythiophene) and its spectroscopic data., Synthetic Metals, 100(2), 237-239.
  10. Donald, L., Gary M.. Lampman, & Kriz, G. S. (1996)., Introduction to spectroscopy: A guide for students of organic chemistry., Saunders college publishing.
  11. Bhadra, S., & Khastgir, D. (2008)., Determination of crystal structure of polyaniline and substituted polyanilines through powder X-ray diffraction analysis., Polymer Testing, 27(7), 851-857.
  12. Hebbar, K. R. (2007)., Basics of X-ray diffraction and its applications., IK International Publishing House Pvt. Limited.
  13. Pouget, J. P., Jozefowicz, M. E., Epstein, A., Tang, X., & MacDiarmid, A. G. (1991)., X-ray structure of polyaniline., Macromolecules, 24(3), 779-789.
  14. Manjunath, B. R., Venkataraman, A., & Stephen, T. (1973)., The effect of moisture present in polymers on their X‐ray diffraction patterns., Journal of applied polymer science, 17(4), 1091-1099.