Effects of polymerization medium on electrical conductivity and optical properties of organic semiconductor-based polypyrrole |
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| Authors: | Fahrettin Yakuphanoglu Mehmet Enver Aydin |
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| Affiliation: | 1. Department of Physics, Faculty of Arts and Sciences, Firat University, Elazig 23119, Turkey;2. Department of Physics, Faculty of Arts and Sciences, University of Dicle, Diyarbakir 21280, Turkey |
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| Abstract: | The effects of tetrabutylammonium tetrafluoroborate (TBAFB), tetrabutylammonium hexafluorophosphate (TBAPF6), and paratoluene sulfonoicacid (PTSA) polymerization mediums on the electrical conductivity and optical properties of the polypyrrole (PPy) have been investigated. The electrical conductivity and optical properties of the samples polymerized in presence of TBAFB, TBAPF6, and PTSA organic salts change with medium of prepared polymer. The electrical conductivity of the TBAFB, PTSA, and TBAPF6 samples at 27°C were found to be 3.43 × 10?1, 4.48 × 10?2, and 1.60 × 10?4 (S/cm), respectively. The lowest optical band gap of the polymer was found to be 2.23 eV. The refractive index dispersion of the samples obeys single oscillator model. The obtained results suggest that polymerization medium changes electrical conductivity and optical properties of the PPy. POLYM. ENG. SCI., 47:1016–1020, 2007. © 2007 Society of Plastics Engineers |
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