Electrochemical impedance spectroscopy of poly(N-methyl pyrrole) on carbon fiber microelectrodes and morphology

Sarac, A. Sezai̇; Sezgin, Sibel; Ateş, Murat; Turhan, C. Metehan; Parlak, Elif Altürk; Irfanoglu, Burcin

doi:10.1016/j.porgcoat.2008.01.016

Cited by 32 publications

(15 citation statements)

References 21 publications

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“…The absorption bands at 989 and 943 cm À1 , which can be assigned to the pentadiene groups, are labeled in the figure. 30 According to the spectrum of PNMPy (Supplementary Figure S1c), the bands at 2950 and 2933 cm À1 are attributed to the asymmetric and symmetric methyl C-H stretching; the peak at 1384 cm À1 is assigned to the C-N stretching mode 31 ; the bands at 769 and 727 cm À1 show the C-H deformations of PNMPy. The spectra of P(CPDT-co-NMPy) (see Supplementary Figure S1b) contains the characteristic peaks of both PCPDT and PNMPy.…”

Section: Resultsmentioning

confidence: 99%

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

Cheng

Zhao

et al. 2012

Polym J

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Electrochemical copolymerization of N-methylpyrrole (NMPy) and cyclopenta[2,1-b:3,4-b 0 ]dithiophene (CPDT) was performed in acetonitrile containing sodium perchlorate as a supporting electrolyte. Characterization of the resultant copolymer P(CPDTco-NMPy) was performed by cyclic voltammetry, UV-vis spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy. The P(CPDT-co-NMPy) film has distinct electrochromic properties and exhibits four different colors (reddish brown, pale khaki, pale sea green and light blue) under various potentials. The maximum contrast (DT%) and response time of the copolymer film at 750 nm were measured as 47.0% and 2.20 s, respectively. An electrochromic device (ECD) based on P(CPDT-co-NMPy) and poly(3,4-ethylenedioxythiophene) was constructed and characterized. The optical contrast (DT%) at 630 nm was found to be 40.2%, and the response time was measured as 1.77 s. The coloration efficiency of the device was calculated to be 476 cm 2 per C at 630 nm. The ECD also has satisfactory optical memories and redox stability.

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Section: Resultsmentioning

confidence: 99%

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

Cheng

Zhao

et al. 2012

Polym J

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“…At the end of this process, CFs were sized [38].CF was electrochemically coated with polyethylendioxythiophene (PolyEDOT) [39], PolyAN [40,41], Polypyrrole (PolyPy) [42], and their derivatives (43,44). The capacitivity and roughness of CF were increased by using this method [45]. Also it was reported that Poly(Py) contribute to the strength of composite [42].…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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“…Generally electrocoating of conjugated polymers on carbon fiber easily allows the characterization of the deposited films by spectroscopic, morphological and electrochemical techniques. Conducting polymers which were coated electrochemically onto CFMEs were studied in detail and reported by Sarac and coworkers [16,[26][27][28][29][30][31][32][33]. Electrochemical impedance spectroscopy (EIS) is a powerful technique to study charge transfer, ion diffusion and capacitance of conducting polymer modified electrodes [34][35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical synthesis of Poly[3, 4-Propylenedioxythiophene-co-N-Phenylsulfonyl Pyrrole]: Morphological, electrochemical and spectroscopic characterization

Guler¹,

Sarac²

2011

Express Polym. Lett.

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Abstract. Electroactive random copolymers of 3,4-Propylenedioxythiophene (ProDOT) and N-Phenylsulfonyl Pyrrole (PSP) were electrochemically synthesized on single carbon fiber microelectrode (SCFME) by cyclic voltammetry (CV). Fourier Transform Infrared-Attenuated Total Reflectance (FTIR-ATR) measurements indicate the inclusion of PSP into the copolymer structure. The influence of feed ratios on the copolymers was studied by CV and electrochemical impedance spectroscopy (EIS) and equivalent circuit modelling (ECM). The morphologies and film thicknesses of copolymers were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The results have shown that the principal changes in morphology, conductivity, porous nature and thickness of Poly(ProDOT-co-PSP) film depend on the concentration of PSP. The strong electron-withdrawing sulfonyl group substitution on PSP significantly inhibited electrochemical copolymerization. Semicircular characteristics at Nyquist plots reflected an increasing trend with the increase of PSP concentration in the feed at high frequency. The semicircular characteristic of the copolymer film is useful for the bioelectrochemical sensor applications.

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Electrochemical impedance spectroscopy of poly(N-methyl pyrrole) on carbon fiber microelectrodes and morphology

Cited by 32 publications

References 21 publications

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

Electrosynthesis and characterization of a novel electrochromic copolymer of N-methylpyrrole with cyclopenta[2,1-b:3,4-b′]dithiophene

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

Electrochemical synthesis of Poly[3, 4-Propylenedioxythiophene-co-N-Phenylsulfonyl Pyrrole]: Morphological, electrochemical and spectroscopic characterization

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