Color Tuning by Oxide Addition in PEDOT:PSS-Based Electrochromic Devices

Levasseur, D.; Mjejri, Issam; Rolland, Thomas; Rougier, Aline

doi:10.3390/polym11010179

Cited by 49 publications

(27 citation statements)

References 34 publications

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“…Characterization and Optimization of ECORE. Detecting cellular electrical signals requires a sensitivity of 10 μV or better, 4 to 5 orders of magnitude less than the voltage (hundreds of millivolts) required to induce a color change of PEDOT:PSS that would be visible to the naked eye (35,36). To maximize the relative reflectivity change, and thus the optical detection sensitivity, we built a four-layer (glass:ITO:PEDOT:water) model to study how the light reflectivity is modulated by changes in the extinction coefficient of the PEDOT film (SI Appendix, Supplementary Text and Figs.…”

Section: Resultsmentioning

confidence: 99%

Label-free optical detection of bioelectric potentials using electrochromic thin films

Alfonso

Zhou

Liu

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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Understanding how a network of interconnected neurons receives, stores, and processes information in the human brain is one of the outstanding scientific challenges of our time. The ability to reliably detect neuroelectric activities is essential to addressing this challenge. Optical recording using voltage-sensitive fluorescent probes has provided unprecedented flexibility for choosing regions of interest in recording neuronal activities. However, when recording at a high frame rate such as 500 to 1,000 Hz, fluorescence-based voltage sensors often suffer from photobleaching and phototoxicity, which limit the recording duration. Here, we report an approach called electrochromic optical recording (ECORE) that achieves label-free optical recording of spontaneous neuroelectrical activities. ECORE utilizes the electrochromism of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) thin films, whose optical absorption can be modulated by an applied voltage. Being based on optical reflection instead of fluorescence, ECORE offers the flexibility of an optical probe without suffering from photobleaching or phototoxicity. Using ECORE, we optically recorded spontaneous action potentials in cardiomyocytes, cultured hippocampal and dorsal root ganglion neurons, and brain slices. With minimal perturbation to cells, ECORE allows long-term optical recording over multiple days.

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Section: Resultsmentioning

confidence: 99%

Label-free optical detection of bioelectric potentials using electrochromic thin films

Alfonso

Zhou

Liu

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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show abstract

“…Detecting cellular electrical signals requires a sensitivity of 10 μV or better, 4-5 orders of magnitude less than the voltage (hundreds of mV) required to induce a color change of PEDOT:PSS that would be visible to the naked eye (35,36). To maximize the relative reflectivity change, and thus the optical detection sensitivity, we built a four-layer (glass:ITO:PEDOT:water) model to study how the light reflectivity is modulated by changes in the extinction coefficient of the PEDOT film (See supplementary text, Fig.…”

Section: Characterization and Optimization Of Ecorementioning

confidence: 99%

Label-free optical detection of bioelectric potentials using electrochromic thin films

Alfonso

Zhou

Liu

et al. 2020

Preprint

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Understanding how a network of interconnected neurons receives, stores, and processesinformation in the human brain is one of the outstanding scientific challenges of our time.The ability to reliably detect neuroelectric activities is essential to addressing this challenge.Optical recording using voltage-sensitive fluorescent probes has provided unprecedented flexibility for choosing regions of interest in recording neuronal activities. However, when recording at a high frame rate such as 500-1000 Hz, fluorescence-based voltage sensors often suffer from photobleaching and phototoxicity, which limit the recording duration. Here, we report a new approach, Electro-Chromic Optical REcording (ECORE), that achieves labelfree optical recording of spontaneous neuroelectrical activities. ECORE utilizes the electrochromism of PEDOT:PSS thin films, whose optical absorption can be modulated by an applied voltage. Being based on optical reflection instead of fluorescence, ECORE offers the flexibility of an optical probe without suffering from photobleaching or phototoxicity.Using ECORE, we optically recorded spontaneous action potentials in cardiomyocytes, cultured hippocampal and dorsal root ganglion neurons, and brain slices. With minimal perturbation to cells, ECORE allows long-term optical recording over multiple days.

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“…[2], [3], [4], [5], [6] In electrochromic research, the conductive polymers are an eye-catching candidate due to its higher conductivity and redox abilities, and especially PEDOT:PSS (poly(3, 4ethylenedioxythiophene) polystyrene sulfonate) influenced a lot because of its stable reversible electrochemical behavior with very high conductivity (up to 1000 S/cm) and stable redox window [7], [8]. Due to a lot of favorable properties of PEDOT:PSS as an electrochromic material, it is suitable for the incorporation as an electrochromic material [9]. As shown in Figure 1, the PEDOT:PSS is a mixture of two ionomers viz.…”

Section: Introductionmentioning

confidence: 99%

Textile Based Three-Layer Robust Flexible and Stable Electrochromic Display

et al. 2020

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The textile-based electrochromic (EC) display which has been developed and presented in this article, is very compact, robust, flexible, stable, efficient, economical, and inclined to biocompatibility. The developed textile display is having only three-layer over conventional seven layers patented electrochromic structures. It is also very efficient, as it can perform its functionality even after 2500 cycles of a run and 1500 times of bending. The innovative and simplified structure of the EC device has been developed with only 3 layers, including the displaying electrode, the electrolyte container, and the counter electrode. The conductive polymer PEDOT:PSS used here as a conductive and electrochromic material, is coated on the textile substrate to perform as one side of the electrode for the asymmetric arrangement of the electrochromic device. The experiment has also been done to find out the best possible textile fabric to serve as the optimal electrochromic container. The biocompatible H3PO4 gel drenched in the semi-permeable membrane has been used as an ion transfer medium for the electrochromic display. This biocompatible ion transfer medium is sandwiched in between the electrochromic displaying electrode (PEDOT:PSS coated on fabric) and aluminum sheet (counter electrode) for making this handmade crude electrochromic display. The investigation of the EC display functioning has been observed through cyclic voltammetry within the life cycle run. The performance of the device has also been investigated in real-life conditions, by providing just ±2.0 V DC power. The other possibility is shown in our article to deposit the PEDOT:PSS compound on the textile substrate was to coat directly the yarns and then to use them into the weaving process to produce the displaying electrode. By this technique, it would also be possible to develop hybrid displays made of structures containing knitted or woven side-emitting optical fibers and our electrochromic display structure, locally.

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Color Tuning by Oxide Addition in PEDOT:PSS-Based Electrochromic Devices

Cited by 49 publications

References 34 publications

Label-free optical detection of bioelectric potentials using electrochromic thin films

Label-free optical detection of bioelectric potentials using electrochromic thin films

Label-free optical detection of bioelectric potentials using electrochromic thin films

Textile Based Three-Layer Robust Flexible and Stable Electrochromic Display

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