Electrochemical synthesis of EDOT–ECZ–EDOT copolymer on carbon fiber micro-electrodes

Sezer, Esma; Saraç, Ayfer; Parlak, Elif Altürk

doi:10.1023/b:jach.0000004019.45567.f0

Cited by 23 publications

(8 citation statements)

References 15 publications

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“…Surface modification of carbon fiber electrodes were performed recently by electropolymerizing 3-methyl-thiophene [26], ter-thiophene [27], pyrrole, 3,4-ethylene-dioxythiophene (EDOT) and their copolymers [28]; by electrocopolymerizing acrylamide, carbazole [29], thiophene, carbazole, pyrrole [30], carbazole, indole [31] and by electrochemical coating of synthesized comonomers such as EDOT-ethylcarbazole-EDOT [32], EDOT-nonylbithiazole-EDOT [33].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Cebeci

Geyik

Sezer

et al. 2007

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Cebeci

Geyik

Sezer

et al. 2007

Journal of Electroanalytical Chemistry

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“…23 Copolymerization of EDOT with other monomers provides a means of creating new conductive polymeric systems and electrode coatings [26][27][28] with functionalized components, 29 tunable optical properties, [30][31][32] and adjustable doping levels. 33 For example, N-alkylcarbazole derivatives have been copolymerized with EDOT both chemically 30,31 and electrochemically 28,32 to create materials in which the optical band gap depends on the molar ratio of monomer constituents. Simultaneous electrodeposition of EDOT with thieno [3,4-b]thiophene yielded a copolymer with significantly enhanced stability to cathodic doping.…”

Section: Introductionmentioning

confidence: 99%

“…The optical absorption maximum (λ max ) of neutral PEDTM is slightly red-shifted at 596 nm, compared to 580 nm obtained for PEDOT. 23 Copolymerization of EDOT with other monomers provides a means of creating new conductive polymeric systems and electrode coatings [26][27][28] with functionalized components, 29 tunable optical properties, [30][31][32] and adjustable doping levels. 33 For example, N-alkylcarbazole derivatives have been copolymerized with EDOT both chemically 30,31 and electrochemically 28,32 to create materials in which the optical band gap depends on the † Current address: Department of Physics and Measurement Technology (IFM), Linko ¨ping University, SE-581 83 Linko ¨ping, Sweden.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Copolymerization and Spectroelectrochemical Characterization of 3,4-Ethylenedioxythiophene and 3,4-Ethylenedioxythiophene−Methanol Copolymers on Indium−Tin Oxide

et al. 2006

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This work describes the electrochemical copolymerization and spectroelectrochemical characterization of 3,4-ethylenedioxythiophene (EDOT) with a commonly used EDOT derivative: 2,3-dihydrothieno[3,4-b]-1,4-dioxyn-2-yl methanol (EDTM), on indium-tin oxide (ITO) electrodes, as a function of the EDTM/EDOT comonomer feed ratio. The potential of initial polymerization and the degree of optical contrast between reduced and oxidized states increased steadily with increasing proportions of EDTM. Reactivity ratios were determined by spectroscopic characterization of the copolymer film and by monitoring the depletion of monomer from the starting solution by liquid chromatography, following the formation of relatively thick PEDOT/PEDTM films. Average reactivity ratios of 1.5 ( 0.2 and 0.4 ( 0.3 were obtained for EDOT and EDTM, respectively, demonstrating preferential deposition of EDOT on ITO electrode surfaces. Significant differences were noted at low and high degrees of conversion, indicating changes in copolymer composition with film thickness. These results have real significance for the characterization of electron-transfer rates for the first monolayer of PEDOT/ PEDTM on ITO, determined by a new mode of potential-modulated attenuated total reflectance spectroelectrochemistry. 1

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“…It may be due to the difficulty of electron transfer in the electrogrowth process. 29 The lowest E 1/2 value implies the highest total charge ( Q = 80.21 mC) accumulation for copolymer onto the electrode. Therefore, the film thickness increases for copolymer, which is observed from SEM images.…”

Section: Resultsmentioning

confidence: 98%

Copolymer formation of 4-vinylbenzyl-9H-carbazole-9-carbodithioate and ethylenedioxythiophene and capacitive behavior

Ateş

Uludag

Arıcan

2014

High Performance Polymers

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In this study, first, a new monomer of 4-vinylbenzyl 9H-carbazole-9-carbodithioate (VBzCzCT) was chemically synthesized and characterized using Fourier transform infrared (FTIR) reflectance, proton nuclear magnetic resonance (1H NMR), and carbon nuclear magnetic resonance (13C NMR) spectroscopies. Second, VBzCzCT and 3,4-ethylenedioxythiophene (EDOT) monomers were electrocopolymerized (VBzCzCT-co-EDOT) in 0.1 M sodium perchlorate (NaClO4)/acetonitrile (CH3CN) on glassy carbon electrode (GCE) using cyclic voltammetry (CV). Third, the best deposition conditions on the electroactivity of the modified homopolymers and copolymer were studied and characterized using different techniques such as CV, FTIR-attenuated total reflectance, scanning electron microscopy–energy dispersion x-ray analysis, and electrochemical impedance spectroscopy (EIS) analysis. The specific capacitance (C sp) of poly(VBzCzCT) (P(VBzCzCT)) was obtained as 20.5 mF cm−2. However, the C sp of P(VBzCzCT-co-EDOT)/GCE was obtained as 45.5 mF cm−2. There is an important improvement in the capacitance value of copolymer formation. The C sp value increases more than twice from P(VBzCzCT) to copolymer. The highest double layer capacitance (C dl = approximately 27.5 mF cm−2) was obtained for P(VBzCzCT-co-EDOT) and P(EDOT) compared with P(VBzCzCT) (C dl = approximately 8.28 mF cm−2. Finally, simulation graphs of Nyquist, Bode-magnitude, and Bode-phase plots were given for homopolymers and copolymer for the electrical equivalent circuit model of R s(Q 1(R 1(C 1(R 2(C 2(R 3 · W))))))(C 3 R 4). The EIS results of P(VBzCzCT), P(EDOT), and P(VBzCzCT-co-EDOT) might be studied as promising active electrode materials for (super)capacitor evaluations.

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Electrochemical synthesis of EDOT–ECZ–EDOT copolymer on carbon fiber micro-electrodes

Cited by 23 publications

References 15 publications

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Electrochemical Copolymerization and Spectroelectrochemical Characterization of 3,4-Ethylenedioxythiophene and 3,4-Ethylenedioxythiophene−Methanol Copolymers on Indium−Tin Oxide

Copolymer formation of 4-vinylbenzyl-9H-carbazole-9-carbodithioate and ethylenedioxythiophene and capacitive behavior

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