• Tolga Karazehir

      Articles written in Bulletin of Materials Science

    • Electrochemical copolymerization of 𝑁-methylpyrrole and 2,2'-bithitiophene; characterization, micro-capacitor study, and equivalent circuit model evaluation

      Murat Ates Fatih Arican Tolga Karazehir

      More Details Abstract Fulltext PDF

      𝑁-methylpyrrole (𝑁-MPy) and 2,2'-bithiophene (BTh) were electrocopolymerized in 0.2 Macetonitrile–sodium perchlorate solvent–electrolyte couple on a glassy carbon electrode (GCE) by cyclic voltammetry (CV). The resulting homopolymers and copolymers in different initial feed ratios of [𝑁-MPy]0/[BTh]0 = 1/1, 1/2, 1/5 and 1/10 were characterized by CV, Fourier-transform infrared reflectance attenuated transmittance (FTIR–ATR), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and electrochemical impedance spectroscopy (EIS). The capacitive behaviours of the modified electrodes were defined via Nyquist, Bode-magnitude, Bode-phase and admittance plots. The equivalent circuitmodel of R(C(R)(QR)(CR)) was performed to fit theoretical and experimental data. The highest low-frequency capacitance (𝐶LF) were obtained as 𝐶LF = ∼ 1.23 × 10-4 mF cm-2 for P(N-MPy), 𝐶LF = ∼ 2.09 × 10-4 mF cm-2 for P(BTh) and 𝐶LF = ∼ 5.54 × 10-4 mF cm-2 for copolymer in the inital feed ratio of [𝑁-MPy]0/[BTh]0 = 1/2.

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2022-2023 Indian Academy of Sciences, Bengaluru.