Synthesis, Electro Chemical and Optical Performance of Organic Acids Doped Polyaniline (PANI)

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Conducting polymers have received much attention due to their unique thermal, electrical, optical, conducting, magnetic properties, easy to synthesis process and significant environmental stability. The wide range of electrochemical and optical properties of polyaniline (PANI) along with its excellent stability makes it useful for various applications like super capacitors, sensors, light emitting diodes, solar cells and rechargeable battery etc. In the present study, Its mainly focused to synthesis the conducting polymers of PANI by suitable chemical oxidation method i.e., the oxidation of aniline monomer using ammonium peroxy disulphide (oxidizing agent) along with three different organic acids dopant namely salicylic acid, benzoic acid and oxalic acid respectively. The synthesized PANI doped organic acids compound were structurally characterized by electrochemical and optical studies. The electrochemical characterization was performed by cyclic voltammetry and the optical properties were investigated by UV–vis., spectroscopy analysis. From the cyclic voltammetry analysis, the PANI compounds show well resolved oxidation and reduction peaks which indicate that the synthesized PANI was emeraldine salt form in nature. Moreover the UV–vis., absorption spectra show that the well defined absorption bands in three different organic acids doped PANI samples. Moreover, the obtained spectral studies indicate that the PANI compounds show significant applications in the field of electronic device fabrication.

Keywords:Conducting Polymer, PANI, Organic acids, Optical and Electro chemical studies


  1. R.H. Baughman, L.W. Shacklette, in: Science and Applications of Conducting Polymers, Eds. W.R. Salaneck, D.T. Clark, E.J. Samuelsen, Adam Hilger, Bristol 1991, p. 47; T.F. Otero, J. Rodriguez, in: Intrinsically. Conducting Polymers: An Emerging Technology, Ed. M. Aldissi, Kluwer Academic Publishers, Dordrecht 1993.
  2. T.A. Skotheim, R.L. Elsenbaumer and J.R. Raynolds Eds., Handbook of Conducting Polymers, Marcel Dekker, New York, 1998.
  3. M.R. Anderson, B.R. Mattes, H. Reiss, R.B. Kaner, Synth. Met. 41, 1151 (1991).
  4. W.Li . and M.Wan : Synth. Met., 1998, 92,121.
  5. X. Jing , X. Wang, Y. Geng. et al.: Synth. Met., 1995, 69, 265.
  6. E.Genies , A.Boyle , M. Lapkowski and C.Tsintavis : Synth.Met., 1990, 36, 139.
  7. H.L. Wang, A.G. MacDiarmid, Y.Z. Wang, D.D. Gebler, A.J.Epstein, Synth. Met. (1996), 78, 33.
  8. L. Ding, M. Jonforsen, L.S. Roman, M.R. Andersson, O. Inganas,Synth. Met. (2000), 110, 133.
  9. S.A. Jenekhe, K.J. Wynne (Eds.), Photonic and Optoelectronic Polymers, ACS Symposium Series, American Chemical Society, Washington, DC, (1997), 672, 395.
  10. A.G. MacDiarmid, Photonic and optoelectronic polymers, Naval Research Reviews, Office of Naval research, Two/1997, vol. XLIX, 6–11.
  11. S.S. Pandey, M.K. Ram,V.K. Srivastava, B.D. Malhotra, J. Appl. Polym. Sci. (1997), 65, 2745.
  12. S.S. Pandey, C.K. Misra, S. Chandra, B.D. Malhotra, J. Appl. Polym. Sci. (1992) ,44, 911.
  13. H.K. Chandhari, D.S. Kelkar, J. Appl. Polym. Sci. (1996), 61, 561
  14. K. Lakshmi, H. John, K.T. Mathew, R. Joseph, K.E. George, Acta Mater., (2009), 57(2), 371.
  15. D.A. Kaplin, S. Qutubuddin, Polymer, (1995),36, 1275.
  16. J.G.Masters, Y.Sun, A.G.Macdiarmid and A.J,Epstein,Synth.met (1991),41,715.
  17. A. Mirmohseni, G. G. Wallace, Polymer 2003, 44, 3523.
  18. R. Montazamia, V. Jain, J. R. Heflinc, Electrochimica Acta (2010)56, 990–994
  19. A. Arslan, E. Hür Int. J. Electrochem. Sci., (2012),7, 12558– 12572
  20. S. L. mu. Y. kong and J. wu. Chinese journal of polymer science,(2004), 22,405–415.
  21. R.Khan, and M. Dhayal, Chitosan/Polyaniline Hybrid Conducting Biopolymer Base Impedimetric Immunosensor to Detect Ochratoxin–A. Biosensors and Bioelectronics, (2009),24, 1700–1705.
  22. A.A.Ansari, R.Khan, K.N.Sood, and B.D.Malhotra. Polyaniline–Cerium Oxide Nanocomposite for Hydrogen Peroxide Sensor. Journal of Nanoscience and Nanotechnology, (2009),9, 4679–4685.
  23. A. Kaushik, R. Khan, V. Gupta, B.D. Malhotra, and S.P. Singh, Hybrid Cross Linked Polyaniline–WO3 Nanocomposite ,Thin Films for NOx Gas Sensing. Journal of Nanoscience & Nanotechnology, (2009),9, 1792–1796.
  24. A. Kaushik, J. Kumar, M.K.Tiwari, R. Khan, B.D. Malhotra, V.Gupta, and S.P.Singh, Fabrication and Characterization of Polyaniline–ZnO Hybrid Nanocomposite Thin Films Journal of Nanoscience & Nanotechnology, (2008),8,1757–1761.
  25. V.Chabukswar, S.Bhavsar , CHEMISTRY & CHEMICAL TECHNOLOGY, (2010),4,4.
  26. A.B.P. Lever, Electronic spectra of dn ions in Inorganic Electronic Spectroscopy, 2nd Edn, Elsevier, Amsterdam, The Netherlands (1984).
  27. H. S. Abdulla and A. I. Abbo, Int. J. Electrochem. Sci., (2012), 7, 10666 - 10678.