Dielectric spectra of polythiophene nanoparticles synthesized at different magnetic flux densities

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Serin M., Yakut Ş., Ulutaş H. K., Çalışkan M., Bozoğlu Parto D., Ulutaş D., ...Daha Fazla

JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, cilt.24, sa.5-6, ss.286-292, 2022 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 5-6
  • Basım Tarihi: 2022
  • Dergi Adı: JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex
  • Sayfa Sayıları: ss.286-292
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

Polythiophene nanoparticles successfully synthesized at different magnetic flux densities, which have values between 1,5 – 4,6 kGauss, were studied. The samples were prepared by dropping the dilute colloidal solutions of the PTh nanoparticles in pure water on the copper grids coated with carbon film. The sizes of polythiophene nanoparticles were determined by STEM analysis. It was observed that polythiophene nanoparticles were aggregated by the effect of magnetic flux. Dielectric measurements were performed using an impedance analyzer in the frequency range 0.1Hz-20MHz at room temperature. Three polarization mechanisms were detected. The AC conductivity obeys the Jonscher Law. The results obtained for polythiophene without and with magnetic flux effect were compared. It was observed that the presence of magnetic flux affects the structure of polythiophene by increasing the electrical capacitance at frequencies lower than 102Hz and frequencies higher than 105Hz. However, among the samples under the influence of magnetic flux, there isn’t a remarkable difference with increasing flux density.