Influence of different organic solvents and oxidants on insulating and film-forming properties of PEDOT polymer

Bashir, Tariq; Bakare, Fatimat Oluwatoyin; Baghaei, Behnaz; Mehrjerdi, Adib Kalantar; Skrifvars, Mikael

doi:10.1007/s13726-013-0159-x

Cited by 7 publications

(4 citation statements)

References 33 publications

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“…EDOT is water insoluble; the type of solvent has a significant impact on the reaction rate and ultimate properties of the polymerized films. A polar organic solvent, MeCN, is chosen to improve the reaction activity of EDOT owing to its high polarity and low donor number (Bashir et al., 2013). The yellowish oxidant-covered substrate turns into light blue, which is the color of PEDOT, immediately when the monomer solution is dropped onto the surface, signifying the successful polymerization of EDOT.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, a novel and facile method, sequential solution polymerization (SSP), is introduced to fabricate highly conductive PEDOT films in situ by solution means in high throughput. As shown in Scheme 1, the process involves sequential deposition of a methanesulfonic acid (MSA) solution of V 2 O 5 and 2,6-di-tert-butylpyridine (DTBP) as well as an acetonitrile (MeCN) solution of EDOT monomers (Benoit et al., 1988, Bashir et al., 2013). The whole process can be completed within a minute.…”

Section: Introductionmentioning

confidence: 99%

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Sequential Solution Polymerization of Poly(3,4-ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors

et al. 2019

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SummaryVarious in situ synthesis methods have been developed for the polymerization of 3,4-ethylenedioxythiophene monomers, such as electropolymerization, oxidative chemical vapor deposition, and vapor phase polymerization. Meeting industrial requirements through these techniques has, however, proven challenging. Here, we introduce an alternative method to fabricate highly conductive poly(3,4-ethylenedioxythiophene) (PEDOT) films in situ by solution means. The process involves sequential deposition of oxidants (V2O5 in this case) and monomers. Excess reactants and by-products can be completely removed from the PEDOT film by MeOH rinsing. The obtained PEDOT films possess good crystallinity and high doping level, with carrier concentration three orders of magnitude higher than that of the commercial product (PH1000, Heraeus GmbH). The electrical conductivity of the as-cast PEDOT film reaches up to 1,420 S/cm. In addition, this method is fully compatible with large-scale printing techniques. These PEDOT conducting films enable the realization of flexible touch sensors, which demonstrate superior flexibility and sensitivity.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sequential Solution Polymerization of Poly(3,4-ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors

et al. 2019

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“…No signal of Fe 2p spectra was observed in PEDOT, suggesting that Fe 3+ cannot coordinate with EDOT and was eventually removed by washing (Figure S3, Supporting Information). [24,25] Furthermore, the reaction of copper chloride dihydrate and thiophene (Th) units was explored under the same conditions, which was displayed in Figure S4 (Supporting Information). Interestingly, the Th system remained a green and transparent solution without any polythiophene precipitates under these conditions, probably due to the larger polymerization potential which was insufficient to initiate its polymerization.…”

Section: Resultsmentioning

confidence: 99%

Highly Stable Layered Coordination Polymer Electrocatalyst toward Efficient CO₂‐to‐CH₄ Conversion

Chen,

Jia,

Chen

et al. 2023

Advanced Materials

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Cu2+‐based materials, a class of promising catalysts for the electrocatalytic carbon dioxide reduction reaction (CO2RR) to value‐added chemicals, usually undergo inevitable and uncontrollable reorganization processes during the reaction, resulting in catalyst deactivation or the new active sites formation and bringing great challenges to exploring their structure‐performance relationships. Herein, a facile strategy is reported for constructing Cu2+ and 3, 4‐ethylenedioxythiophene (EDOT) coordination to stabilize Cu2+ ions to prepare a novel layered coordination polymer (CuPEDOT). CuPEDOT enables selective reduction of CO2 to CH4 with 62.7% Faradaic efficiency (FE) at the current density of 354 mA cm−2 in a flow cell, and the catalyst is stable for at least 15 h. In situ spectroscopic characterization and theoretical calculations reveal that CuPEDOT catalyst can maintain the Cu2+‐EDOT coordination structurally stable in CO2RR, and significantly promote the further hydrogenation of *CO intermediates, favoring the formation of CH4 instead of dimerization to C2 products. The strong coordination between EDOT and Cu2+ prevents the reduction of Cu2+ ions during CO2RR. Our finding of this work provides a new perspective on designing molecularly stable, highly active catalysts for CO2RR.This article is protected by copyright. All rights reserved

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“…To overcome this issue, we have employed two organic solvents, namely, acetonitrile and propylene carbonate, in which the polymerization of EDOT has been previously demonstrated. [21,40,41] Indeed, the reactant and the oxidant (FeCl3 • 6 H2O) are miscible/soluble in these solvents, so solutions of up to 1.0 M concentration could have been prepared, but for our experiments, we have used 9 and 22 mM concentration of both components in acetonitrile and propylene carbonate, respectively. A large difference in the polymerization kinetics between the two solvents has been observed: Whereas the reaction mixture in acetonitrile turned deep blue instantaneously upon mixing, in propylene carbonate the color was slowly developing, starting from yellow and turning toward greenish and then blue over an hour.…”

Section: Resultsmentioning

confidence: 99%

EDOT polymerization at photolithographically patterned functionalized graphene

Kovaříček

Drogowska

Komínková

et al. 2017

Carbon

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Graphene possesses unique features that make it attractive for nanotechnology. Functional devices often require combination of several materials with specific functions, and graphenepolymer composites are one of them. Herein, we report on the preparation of PEDOT:Graphene bilayers by in situ polymerization of EDOT on covalently functionalized graphene. The polymerization proceeds exclusively on the grafted graphene, and patterned structures with high spatial resolution down to 3 μm could have been prepared. The composite exhibits enhanced efficiency of electrochemical doping compared to pristine graphene, unsymmetrical transport characteristic with very good hole-transporting properties and efficient electronic communication between the two materials.

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Influence of different organic solvents and oxidants on insulating and film-forming properties of PEDOT polymer

Cited by 7 publications

References 33 publications

Sequential Solution Polymerization of Poly(3,4-ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors

Sequential Solution Polymerization of Poly(3,4-ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors

Highly Stable Layered Coordination Polymer Electrocatalyst toward Efficient CO₂‐to‐CH₄ Conversion

EDOT polymerization at photolithographically patterned functionalized graphene

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Influence of different organic solvents and oxidants on insulating and film-forming properties of PEDOT polymer

Cited by 7 publications

References 33 publications

Sequential Solution Polymerization of Poly(3,4-ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors

Sequential Solution Polymerization of Poly(3,4-ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors

Highly Stable Layered Coordination Polymer Electrocatalyst toward Efficient CO2‐to‐CH4 Conversion

EDOT polymerization at photolithographically patterned functionalized graphene

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Highly Stable Layered Coordination Polymer Electrocatalyst toward Efficient CO₂‐to‐CH₄ Conversion