In situ ftir spectroelectrochemical characterization of poly(3,4-ethylenedioxythiophene) films

Kvarnström, Carita; Neugebauer, Helmut; Blomquist, S.; Ahonen, H.J.; Kankare, Jouko; Ivaska, Ari; Sariciftci, Niyazi Serdar

doi:10.1016/s0379-6779(98)01133-3

Cited by 74 publications

(51 citation statements)

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“…The peak at 878 cm À1 corresponds to the symmetric vibration of C-O-C in a cyclic ether structure. The result confirms the existence of PEDOT, which is in agreement with previous studies [22]. The peak at 1220-1180 cm À1 is a characteristic absorption of SO 3 À .…”

Section: Resultssupporting

confidence: 93%

Electrochemical polymerization and properties of PEDOT/S-EDOT on neural microelectrode arrays

Xiao

Cui

Martin

2004

Journal of Electroanalytical Chemistry

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Section: Resultssupporting

confidence: 93%

Electrochemical polymerization and properties of PEDOT/S-EDOT on neural microelectrode arrays

Xiao

Cui

Martin

2004

Journal of Electroanalytical Chemistry

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“…Consistent with previous report 38 the peaks near 830 and 933 cm −1 correspond to the vibrations of S-C bonds in polymerized PEDOT chains. The strong peak at 1722 cm −1 is usually associated with the doped state of PEDOT.…”

Section: Resultssupporting

confidence: 92%

Localized Corrosion Behavior of AZ31B Magnesium Alloy with an Electrodeposited Poly(3,4-Ethylenedioxythiophene) Coating

Tefashe

Dauphin‐Ducharme

Danaie

et al. 2015

J. Electrochem. Soc.

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Herein we report the characterization of localized corrosion of AZ31B magnesium alloy electrochemically coated with poly(3,4-ethylenedioxythiophene) (PEDOT) from ionic liquid electrolyte. Several scanning probe techniques including high resolution electron microscopy, SVET, SECM amperometric detection of H 2 fluxes, potentiometric SECM detection of local pH and localized potentiodyanmic measurements were used to evaluate the microstructure of the coating and its corrosion protectiveness. In order to examine long-term durability of corrosion protection due to the PEDOT coating, these measurements were performed after different immersion times. It was observed that PEDOT coating appears to lose its protective ability after localized coverage of corrosion products. The results of this study provide important information considering the interest in this coating for use in biomedical implants and prior indications of beneficial passivation. Replacement of heavy alloy components with light-weight materials is of prime concern for automotive and aerospace manufacturers in order to reduce the fuel consumption and hence polluting CO 2 emissions. Magnesium alloys are one of the potential candidates owing to their excellent physical and mechanical properties such as lower density, a higher strength-to-mass ratio and a higher vibrational damping capacity compared to steel and aluminum alloys.1 However, the high corrosion susceptibility is the major drawback preventing more widespread use of such Mg-based alloys.The addition of alloying elements, alternate processing technologies and surface coatings are effective in improving the corrosion performance of Mg-based alloys.2,3 Dip coating is particularly attractive to the automotive industry because of its simplicity, low costs and great coverage ability. 4,5 Coating processes vary from the widely used chromate/manganese dip treatment to anodic treatments in fluoridecontaining baths, 6,7 and are generally considered hazardous to human health and to the environment.2,3 More environmentally sustainable surface modification processes were identified in conductive polymers but remain challenging to implement with light metal alloys. 8,9 Conducting polymer films are readily formed by direct electrodeposition onto Pt and Au.10 They have been used for corrosion protection of structural metal like steel and aluminum with success but comprehensive investigations for magnesium materials is lacking. The deposition of conductive polymers onto Mg-based electrodes from aqueous solutions is generally not feasible because the positive potentials required for electropolymerization concurrently form thick surface oxide films and lead to copious hydrogen evolution 11,12 that prevent the formation of adherent and continuous conducting polymer films. 13Room temperature ionic liquids (RTIL's) are increasingly being applied in electrochemistry 14 and have recently been explored as solvents for the electropolymerization of conducting polymers. [15][16][17] Generally, conducting polymers prepared from...

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“…1 shows optical and SEM micrographs of the resulting PEDOT fibers. The fibers displayed the typical light blue color of conductive PEDOT [21,22]. Their average diameter was 350 ± 60 nm.…”

Section: Pedot Nanofibersmentioning

confidence: 98%

All-textile flexible supercapacitors using electrospun poly(3,4-ethylenedioxythiophene) nanofibers

Laforgue

2011

Journal of Power Sources

192

118

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In situ ftir spectroelectrochemical characterization of poly(3,4-ethylenedioxythiophene) films

Cited by 74 publications

References 1 publication

Electrochemical polymerization and properties of PEDOT/S-EDOT on neural microelectrode arrays

Electrochemical polymerization and properties of PEDOT/S-EDOT on neural microelectrode arrays

Localized Corrosion Behavior of AZ31B Magnesium Alloy with an Electrodeposited Poly(3,4-Ethylenedioxythiophene) Coating

All-textile flexible supercapacitors using electrospun poly(3,4-ethylenedioxythiophene) nanofibers

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