Electrochemical impedance spectroscopy and morphological analyses of pyrrole, phenylpyrrole and methoxyphenylpyrrole on carbon fiber microelectrodes

Sarac, A. Sezai̇; Sezgin, Sibel; Ateş, Murat; Turhan, C. Metehan

doi:10.1016/j.surfcoat.2008.02.007

Cited by 62 publications

(27 citation statements)

References 35 publications

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“…It was signed that the value of impedance for the electrode coated poly(3-methylthiophene) was affected with the morphology of coating and also the morphology was affected with the present electrolyte [51]. In this study, we [48][49][50].…”

Section: Introductionmentioning

confidence: 82%

“…Electrochemical Impedance Spectroscopy (EIS) was used as a spectroscopic technique to analyze electrochemical process occurring at the electrolyte/electrode interface and to investigate the charge transfer, ion diffusion and capacitor behavior of conducting polymer modified electrodes [46][47][48]. In the literature, the capacitive features of carbon fiber (CF) electrodes modified by conducting polymer such as poly(N-methyl pyrrole) [45], polythiophene and poly(N-methylpyrrole) [49], Npyrrole, N-phenylpyrrole, and 1[4-methoxyphenyl]-1H-pyrrole homopolymers [50], poly(3-dodecylthiophene) [48], poly(3-methylthiophene) [51], poly(thiophene-imidazole) [52], were characterized by EIS. It was signed that the value of impedance for the electrode coated poly(3-methylthiophene) was affected with the morphology of coating and also the morphology was affected with the present electrolyte [51].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Sizing Compound on the Electropolymerization of Pyrrole and the Impedance of Carbon Fiber Coated With Poly(pyrrole)

Dolaş¹,

Giray²,

Saraç³

2016

J. Turk. Chem. Soc., Sect. A: Chem.

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Carbon Fiber (CF) is used as a strengthening material in resin composites having high performance in most industrial areas due to the fact that it has mechanical properties such as low weight, high durability, and toughness. The mechanical performances of composite materials depend on the features of fiber and matrix which composed them. The one of methods which improves the features of fiber surface is the coating on fiber surface with thin film. When the fiber was coated with electropolymer, the mechanical durability of the composite was increased. In this study, carbon fibers were electrochemically coated with polypyrrole (PPy) in the presence of sizing compound (SC) based on epoxy. During the process, it was investigated that how current, obtained coating weights and impedance data, especially capacitance, changed by the amount of SC. For this reason, different amounts of SC (%0; % 0.18; %1.8 v/v) was added into the electrolyte solution (0.1 M NaClO4-ACN) including 0.1 M Pyrrole (Py). Coating process was carried out by using Constant Potential or Cyclic Voltammetry Techniques. Other techniques for investigations were gravimetrical analysis, electrochemical impedance spectroscopy, Fourier Transform Infrared Spectroscopy (FT-IR) and Light Microscopy. At the end of the coating, the weight of coating and specific capacitance (Csp) values were 0.8 mg/g and 114 µF for % 0 of SC 10 mg/g and 57 µF for %0.18 of SC and 1.73 mg/g and 166 µF for %1.8 of SC, respectively. As a result, the coating weight and capacitance data (especially, Csp,) of carbon fiber coated with PPy were inversely changed with the amount of SC added into electrolyte.

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

The Effect of Sizing Compound on the Electropolymerization of Pyrrole and the Impedance of Carbon Fiber Coated With Poly(pyrrole)

Dolaş¹,

Giray²,

Saraç³

2016

J. Turk. Chem. Soc., Sect. A: Chem.

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“…P(TCzC) corresponds to peak at 3473 cm -1 for C-H stretching, at 1626 cm -1 for C=C stretching, at 1483 cm -1 for CH 3 , at 1046 cm -1 for dopant ion (BF 4 -) and at 762 cm -1 for C-S stretching (Figure 10). The peak at 1156 cm -1 was the bond of S=O bond in carbazole structure [44]. In our previous paper, PCz was electropolymerized on CFME in 0.1 M NaClO 4 /PC.…”

Section: Ftir-atr Measurementsmentioning

confidence: 92%

A novel synthesis of 4-toluene 9H-carbazole-9-carbodithioate, electropolymerization and impedance study

Ateş

Uludag²,

Karazehir³

et al. 2014

Express Polym. Lett.

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Among conducting polymers, polycarbazoles are known for their good electro-activity [1,2] and thermal [3][4][5], electrical [6], photo-physical [7], and electrochromic properties [8]. They have been suggested for a number of applications, such as electroluminescent devices [9], sensors [10,11], redox catalysts [12], and electrochromic displays [13]. The functional groups, such as amino, imino and sulfonic groups have been performed for achieving new polymers which meet the criteria of commercial applications [14][15][16]. There are many novel syntheses of functional polycarbazole papers. 3,6-bis (2,3-dihydrothieno [3,4-b] N-(o-ethynyl) Abstract. A novel synthesis of 4-toluene 9H-carbazole-9-carbodithioate (TCzC) was chemically synthesized and characterized by Fourier Transform Infrared (FTIR), proton nuclear magnetic resonance ( 1 H-NMR), and carbon nuclear magnetic resonance ( 13 C-NMR) spectroscopies. Specific (C sp ) and double layer capacitances (C dl ) of the electro-coated poly(carbazole) and poly(TCzC) films were obtained on glassy carbon electrode (GCE) by impedimetric method with DC potential from -0.1 to +1.0 V by increasing potential of 0.2 V. The polymers were characterized by Cyclic voltammetry (CV), Fourier transform infrared reflectance-attenuated total reflection spectroscopy (FTIR-ATR), Atomic force microscopy (AFM), and Electrochemical impedance spectroscopy (EIS). The use of additional variable (DC potential) helped to disambiguate the equivalent circuit model of R (C(R(Q(RW))))(CR).Simulation results were compared with experimental data. In this study, substituted group effects of CS 2 and tosyl on carbazole polymer were investigated by EIS technique. CS 2 group together with tosyl group in the structure of carbazole decreased the specific capacitance value (C sp = 0.43 mF·cm -2 ) compared to PCz (C sp = 1.44 mF·cm -2 ). Electropolymerization formation was seriously affected by substituted groups of CS 2 and tosyl on conjugation system because of the electron donor and acceptor ability.

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“…The sulfonate group can provide a cation exchange site similar to Nafion but with a thinner grafted layer that is covalently attached to the electrode surface (Hermans et al, 2006). Electrically conductive polymer layers of pyrrole or thiophene derivatives with immobilized anionic or cationic groups have recently been electrodeposited onto 7 μm carbon fibers (Sarac et al, 2008;Sarac et al, 2009). Insulating poly(oxyphenylene) polymer layers may also be deposited by electrochemical means onto CF microelectrodes (El-Deen et al, 2006;Budai et al, 2007).…”

Section: Covalent Modifications Of Carbon Electrodes Using Electrochementioning

confidence: 99%

Carbon Fiber-based Microelectrodes and Microbiosensors

Budai¹

2010

Intelligent and Biosensors

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Electrochemical impedance spectroscopy and morphological analyses of pyrrole, phenylpyrrole and methoxyphenylpyrrole on carbon fiber microelectrodes

Cited by 62 publications

References 35 publications

The Effect of Sizing Compound on the Electropolymerization of Pyrrole and the Impedance of Carbon Fiber Coated With Poly(pyrrole)

The Effect of Sizing Compound on the Electropolymerization of Pyrrole and the Impedance of Carbon Fiber Coated With Poly(pyrrole)

A novel synthesis of 4-toluene 9H-carbazole-9-carbodithioate, electropolymerization and impedance study

Carbon Fiber-based Microelectrodes and Microbiosensors

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