| Titre : |
Comparison of electrolyte effects for poly(3,4-ethylenedioxythiophene) and poly(3-octylthiophene) by electrochemical impedance spectroscopy and polymerization parameters with morphological analyses on coated films |
| Type de document : |
texte imprimé |
| Auteurs : |
Murat Ates, Auteur ; Tolga Karazehir, Auteur ; Fatih Arican, Auteur ; Nuri Eren, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 317-330 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Conducteurs organiques
Electrolytes
Electropolymérisation
Microscopie à force atomique
Poly(3,4-éthylènedioxythiophène)
Poly(3-octylthiophène)
Spectroscopie d'impédance électrochimique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
3,4-Ethylenedioxythiophene and 3-octylthiophene were electropolymerized on glassy carbon electrodes (GCE) to compare with four different electrolytes [lithium perchlorate (LiClO4), sodium perchlorate, tetraethylammonium tetrafluoroborate, and tetrabutylammonium tetrafluoroborate] in a solvent of acetonitrile (CH3CN). Modified electrodes were characterized by cyclic voltammetry, attenuated total reflectance–Fourier transform IR spectroscopy, scanning electron microscopy, energy dispersive X-ray analysis, atomic force microscopy, and electrochemical impedance spectroscopy (EIS). Nyquist and Bode plots for magnitude, phase, admittance, and capacitance on both polymer-modified electrodes were comparatively investigated in detail. The highest low-frequency capacitance (C LF) and double-layer capacitance (C dl) were obtained in 0.1 M LiClO4/CH3CN for poly(3,4-ethylenedioxythiophene) and poly(octylthiophene)/GCE. EIS data were fitted to the equivalent circuit model of R(Q(R(C(R(C(RW))))))(CR), which is used to investigate circuit parameters. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Instrumentation - EIS and modeling
- RESULTS AND DISCUSSION : Electropolymerization of EDOT and Oth on CGE - Effect of scan rate in monomer-free solution - FTIR-ATR measurements - SEM measurements - EDX anaysis - AFM measurements - EIS study - Equivalent circuit model evaluation |
| DOI : |
10.1007/s11998-012-9448-0 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9448-0.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18731 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 3 (05/2013) . - p. 317-330
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