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has been cited by the following article:

• TITLE: Synthesis and Characterization of Polypyrrole (PPy) Thin Films

  AUTHORS: M. A. Chougule, S. G. Pawar, P. R. Godse, R. N. Mulik, Shashwati Sen, V. B. Patil

  KEYWORDS: Polypyrrole, Chemical Polymerization, XRD, SEM, FTIR

  JOURNAL NAME: Soft Nanoscience Letters, Vol.1 No.1, January 27, 2011

  ABSTRACT: Polypyrrole (PPy) was synthesized by chemical oxidative polymerization technique using monomer pyrrole and ammo-nium persulphate as an oxidant in a ratio of 1:1. Thin films of polypyrrole were prepared by dissolving polypyrrole in mcresol and cast using spin coating technique on glass substrates. Thin films of polypyrrole were characterized by X ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infra red spectroscopy (FTIR), UV visible spectroscopy and electrical resistivity by four probe method. The XRD spectra showed that the polypyrrole is amorphous in nature. SEM studies revealed a uniform granular structure of PPy. The FTIR spectra shows that the presence of all characteristics absorption peaks of polypyrrole that is, 890 cm?1 (=C–H out-of-plane vibration), 1040 cm?1 (=C–H in-plane vibration), 1170 cm?1 (N–C stretch bending) and 1410 cm?1 (pyrrole ring vibration). UV visible study shows PPy films exhibit absorption peak at 446 nm (2.77 eV). Room temperature electrical resistivity of PPy is in the critical regime of the metal –to –insulator (M-I) transition.