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Murat Ates
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Volume 36 Issue 7 December 2013 pp 1281-1290
Murat Ates Fatih Arican Tolga Karazehir
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.
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Bulletin of Materials Science
Volume 46, 2023
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