Dominant ion transport processes of ionic liquid electrolyte in poly(3,4‐ethylenedioxythiophene)

Irvin, Jennifer A.; Carberry, Jamie R.

doi:10.1002/polb.23229

Cited by 8 publications

(5 citation statements)

References 39 publications

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“…The improved stability could in part be attributed to lower volume changes reported for EAPs when using solvent-free electrolytes . Recently, Irvin and Carberry showed that PEDOT cycled in neat [EMI][BTI] exhibited cation-dominated transport during oxidation instead of anion-dominated transport that is typically observed when using solution-based organic electrolytes. Previously, a cation-dominated transport has also been observed for EAP actuators and films in [EMI][BTI] along with lower degrees of swelling and shrinking during cycling. − Lower volume changes in the oxidized state should result in less mechanical stress, which may explain why our PEDOT-ESCs are stable over 400 000 cycles.…”

Section: Resultsmentioning

confidence: 99%

Optimization of PEDOT Films in Ionic Liquid Supercapacitors: Demonstration As a Power Source for Polymer Electrochromic Devices

Österholm

Shen

Dyer

et al. 2013

ACS Appl. Mater. Interfaces

120

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We report on the optimization of the capacitive behavior of poly(3,4-ethylenedioxythiophene) (PEDOT) films as polymeric electrodes in flexible, Type I electrochemical supercapacitors (ESCs) utilizing ionic liquid (IL) and organic gel electrolytes. The device performance was assessed based on figures of merit that are critical to evaluating the practical utility of electroactive polymer ESCs. PEDOT/IL devices were found to be highly stable over hundreds of thousands of cycles and could be reversibly charged/discharged at scan rates between 500 mV/s and 2 V/s depending on the polymer loading. Furthermore, these devices exhibit leakage currents and self-discharge rates that are comparable to state of the art electrochemical double-layer ESCs. Using an IL as device electrolyte allowed an extension of the voltage window of Type I ESCs by 60%, resulting in a 2.5-fold increase in the energy density obtained. The efficacies of tjese PEDOT ESCs were assessed by using them as a power source for a high-contrast and fast-switching electrochromic device, demonstrating their applicability in small organic electronic-based devices.

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Section: Resultsmentioning

confidence: 99%

Optimization of PEDOT Films in Ionic Liquid Supercapacitors: Demonstration As a Power Source for Polymer Electrochromic Devices

Österholm

Shen

Dyer

et al. 2013

ACS Appl. Mater. Interfaces

120

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“…On the other hand, when using ionic liquid electrolytes diluted in organic solutions, such as 1-ethyl-3-methyl-imidazolium bis(trifluoromethyl-sulfonyl)imide (EMIBTI), the ion migration process also presents typical anion-driven characteristics. While in the neat EMIBTI, the ion migration process presents cation-driven characteristics dominated by imidazole ions (Irvin and Carberry, 2013 ). Moreover, the dimensional changes of the actuators not only rely on the ion flux transmission between polymer chains; the exchange of solvent molecules accompanying ion migration and the conformational change of the polymer backbone also play a role, as detailed in the works of Bund and Neudeck ( 2004 ) and Chen et al ( 1996 ).…”

Section: Actuation Mechanismsmentioning

confidence: 99%

PEDOT-Based Conducting Polymer Actuators

et al. 2019

Front. Robot. AI

108

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Conducting polymers, particularly poly(3,4-ethylenedioxythiophene) (PEDOT) and its complex with poly(styrene sulfonate) (PEDOT:PSS), provide a promising materials platform to develop soft actuators or artificial muscles. To date, PEDOT-based actuators are available in the field of bionics, biomedicine, smart textiles, microactuators, and other functional applications. Compared to other conducting polymers, PEDOT provides higher conductivity and chemical stability, lower density and operating voltages, and the dispersion of PEDOT with PSS further enriches performances in solubility, hydrophility, processability, and flexibility, making them advantageous in actuator-based applications. However, the actuators fabricated by PEDOT-based materials are still in their infancy, with many unknowns and challenges that require more comprehensive understanding for their current and future development. This review is aimed at providing a comprehensive understanding of the actuation mechanisms, performance evaluation criteria, processing technologies and configurations, and the most recent progress of materials development and applications. Lastly, we also elaborate on future opportunities for improving and exploiting PEDOT-based actuators.

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“…From this plot, it is evident that the film did not delaminate or lose electroactivity, even after 100 cycles. The change in oxidation behavior may be due to the switch from the organic TBAP electrolyte solution to the aqueous PBS electrolyte solution; changing electrolyte has been observed to change the electrochemical behavior. , …”

Section: Resultsmentioning

confidence: 99%

“…The change in oxidation behavior may be due to the switch from the organic TBAP electrolyte solution to the aqueous PBS electrolyte solution; changing electrolyte has been observed to change the electrochemical behavior. 45,46 3.2. Aptamer Attachment to the EAP Biosensor.…”

Section: Polymer Growth and Cycling Stabilitymentioning

confidence: 99%

Functionalized Thiophene-Based Aptasensors for the Electrochemical Detection of Mucin-1

Haya

Runsewe

Otakpor

et al. 2023

ACS Appl. Polym. Mater.

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Mucin-1 (MUC1) is a glycoprotein found in epithelial tissues; its function is to protect the body by blocking pathogens from reaching the cells. Overexpression and elevated serum levels of this protein are observed in breast cancer, lung cancer, stomach cancer, ovarian cancer, and many other types of malignancies. Current methods used to detect cancer are expensive and therefore not readily accessible; some methods are also invasive. The ability to detect MUC1 could allow for early detection of cancer, leading to more successful outcomes. This research focuses on the development of a robust biosensor platform based on aptamer-functionalized electroactive polymers (EAPs) that can be used for the detection of cancer. To achieve this, indium tin oxide slide surfaces were modified to enable the electrochemical growth of an electroactive copolymer of 3,4-ethylenedioxythiophene (EDOT) and 2,2-(3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine-3,3-diyl)diacetic acid (ProDOT(COOH)2), with the carboxylic acid functionalities added to introduce bonding sites for a MUC1-specific aptamer. Three copolymer ratios were investigated to maximize the performance. The aptamer was then attached to the EAPs to create aptasensors that could be used for the electrochemical detection of a MUC1 polypeptide. The limits of detection of the biosensors and their stabilities were evaluated. The MUC1 aptasensor showed stability for at least 6 days, depending on the ratio of the copolymer, when stored in 0.1 M phosphate-buffered saline. The 1:2 EDOT/ProDOT(COOH)2 copolymer was found to be the most stable over time and to offer one of the smallest limits of detection, making it the most favorable ratio for aptasensor optimization. Specifically, the 1:2 EDOT/ProDOT(COOH)2 biosensor provided a limit of detection of 369 fg/mL (418 fM) and a linear range of 625 fg/mL to 6.25 ng/mL (709 fM to 7.09 nM) with the MUC1 peptide APDTRPAPG. The sensor also showed selectivity when tested with competing agents including IgG and cell media. The performance of the aptasensor demonstrated its potential as a highly sensitive and selective biosensor for MUC1 detection.

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Dominant ion transport processes of ionic liquid electrolyte in poly(3,4‐ethylenedioxythiophene)

Cited by 8 publications

References 39 publications

Optimization of PEDOT Films in Ionic Liquid Supercapacitors: Demonstration As a Power Source for Polymer Electrochromic Devices

Optimization of PEDOT Films in Ionic Liquid Supercapacitors: Demonstration As a Power Source for Polymer Electrochromic Devices

PEDOT-Based Conducting Polymer Actuators

Functionalized Thiophene-Based Aptasensors for the Electrochemical Detection of Mucin-1

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