Electrochromic, magnetotransport and AC transport properties of vapor phase polymerized PEDOT (VPP PEDOT)

Padmalekha, K. G.; Admassie, Shimelis

doi:10.1016/j.synthmet.2009.06.017

Cited by 14 publications

(22 citation statements)

References 24 publications

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“…Finally, the sample was left at room temperature for 30 min before rinsing the unreacted oxidant with ethanol. The average film thickness we obtained when vapour phase synthesis was made on different substrates under these conditions was about 120 nm [26].…”

Section: Methodsmentioning

confidence: 90%

“…The VPP PEDOT was prepared on the polished glassy carbon electrode following similar procedures reported earlier [25][26][27][28]. Briefly, 0.585 mL of pyridine was added to 20 mL of Baytron C 40% iron(III) tosylate in butanol (H. C. Starck Newton, MA) and the mixture was then spin coated on a polished glassy carbon electrode for 1 min at 2500 rpm.…”

Section: Methodsmentioning

confidence: 99%

“…Particularly, poly (3,4-ethylenedioxythiophene), which is commonly used in organic electronic devices show quite remarkable behavior when synthesized through vapor phase method which results from its high conductivity and we characterized and investigated its potential applications in organic electronics [25][26][27][28]. In this study, we report to our knowledge for the first time the electrocatalytic behavior of this material for oxygen reduction at rotating glassy carbon disk electrode.…”

Section: Introductionmentioning

confidence: 97%

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Electrocatalytic reduction of oxygen at vapor phase polymerized poly(3,4-ethylene- dioxidethiophene) modified glassy carbon electrode

Wondimu¹,

Admassie²

2012

Bull. Chem. Soc. Eth.

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ABSTRACT. We successfully polymerized poly (3,4-ethylenedioxidethiophene) by vapor phase polymerization technique on rotating glassy carbon disk electrode. The catalytic activity of this electrode towards oxygen reduction reaction was investigated and showed remarkable activity. Rotating disk voltammetry was used to study the kinetics of oxygen reduction reaction by plotting Levich, Koutecky Levich and Tafel plots. It was found that the reduction was mixed diffusion and kinetic controlled. The O2 reduction underwent through four electron transfer reaction. The Tafel slope was obtained as 55 mV/dec. The limiting current density was higher by a factor of more than 10 3 times the exchange current density.

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Section: Methodsmentioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Electrocatalytic reduction of oxygen at vapor phase polymerized poly(3,4-ethylene- dioxidethiophene) modified glassy carbon electrode

Wondimu¹,

Admassie²

2012

Bull. Chem. Soc. Eth.

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“…87 VPP PEDOT films have been found to generally have a lower work function (%4.3 eV) than solution processed PEDOT:PSS films (%5.1 eV). 88,89 Mechanical Properties A significant benefit of using organic polymeric materials is their good mechanical properties. Conductive polymer layers may be vapor deposited onto a number of flexible, fragile, and otherwise difficult to work with substrates.…”

Section: Work Functionmentioning

confidence: 99%

“…Electrochemical testing was used to study the electrochromic properties of PEDOT deposited by VPP 89 and by oCVD. 62 Film transmission contrasts up to 45% at 566 nm were achieved for the oCVD films, and the contrast remained 85% of the original value after 150 cycles.…”

Section: Electrochromic Devicesmentioning

confidence: 99%

Vapor phase oxidative synthesis of conjugated polymers and applications

Bhattacharyya

Howden

Borrelli

et al. 2012

J Polym Sci B Polym Phys

112

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Since their discovery, electrically conductive polymers have gained immense interest both in the fields of basic and applied research. Despite their vast potential in the fabrication of efficient, flexible, and low-cost electronic and optoelectronic devices, they are often difficult to process by wetchemical methods due to their very low to poor solubility in organic solvents. The use of vapor-based synthetic routes, in which conductive polymers can be synthesized and deposited as a thin film directly on a substrate from the vapor phase, provides many unique advantages. This article discusses oxidative vapor deposition processes, primarily vapor phase polymerization and oxidative chemical vapor deposition, of conjugated polymers and their applications. The mild operating conditions (near room temperature processing) allow conformal and functional coatings of conjugated polymers on delicate substrates.

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Enhanced Thermoelectric Performance of Vapor Phase Polymerized PEDOT‐Tos via Ionic Liquid Post‐Treatment

Bao,

Sun,

Jiao

et al. 2024

Advanced Sustainable Systems

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Thermoelectric (TE) materials can effectively convert waste heat into electricity, which is a key technology for solving energy shortage problems. Poly(3,4‐ethylenedioxythiophene) (PEDOT), as a promising energy conversion material, has attracted much attention due to its easy doping, low toxicity, and high flexibility. However, the TE performance of PEDOT still needs further improvement. In this work, vapor phase polymerization (VPP) and ionic liquid (IL) post‐treatment are combined to obtain high‐performance PEDOT film. It is demonstrated that by varying the polymerization conditions, the optimal conductivity and Seebeck coefficient of PEDOT‐Tos are 947 S cm−1 and 18.3 µV K−1, respectively. Furthermore, after treatment with 1‐ethyl‐3‐methylimidazolium tetrafluoroborate (EMIM BF4), its power factor can be further enhanced to a maximum value of 154.58 µW m−1 K−2, which is 4.9 times higher than that without treatment (31.67 µW m−1 K−2). The enhanced TE performance of PEDOT is largely due to changes in doping levels and morphology, which have been confirmed through different characterization methods. These results will contribute to the preparation of high‐performance PEDOT films by the VPP method.

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Electrochromic, magnetotransport and AC transport properties of vapor phase polymerized PEDOT (VPP PEDOT)

Cited by 14 publications

References 24 publications

Electrocatalytic reduction of oxygen at vapor phase polymerized poly(3,4-ethylene- dioxidethiophene) modified glassy carbon electrode

Electrocatalytic reduction of oxygen at vapor phase polymerized poly(3,4-ethylene- dioxidethiophene) modified glassy carbon electrode

Vapor phase oxidative synthesis of conjugated polymers and applications

Enhanced Thermoelectric Performance of Vapor Phase Polymerized PEDOT‐Tos via Ionic Liquid Post‐Treatment

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