Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film Growth
Abstract In bioelectronics, conducting polymer coatings allow the reduction of the impedance of metallic electrodes and facilitate the translation of bioelectrical signals at their interface. Such coatings can be made using thin film deposition from a solution or direct synthesis via electrodepositi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-09-01
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| Series: | Advanced Electronic Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aelm.202201282 |
| _version_ | 1827820610150989824 |
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| author | Hajar Mousavi Laura M Ferrari Amelia Whiteley Esma Ismailova |
| author_facet | Hajar Mousavi Laura M Ferrari Amelia Whiteley Esma Ismailova |
| author_sort | Hajar Mousavi |
| collection | DOAJ |
| description | Abstract In bioelectronics, conducting polymer coatings allow the reduction of the impedance of metallic electrodes and facilitate the translation of bioelectrical signals at their interface. Such coatings can be made using thin film deposition from a solution or direct synthesis via electrodeposition. The electrical control over the deposition offers the possibility for a fine‐tuning of the film's thickness and structure. However, the mechanical stability of such coatings mainly suffer from their poor adhesion to the electrode surface and film cracking. Here, an extended study on the kinetics of poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) electropolymerization and the evolution of its physicochemical properties is provided. The impedance spectroscopy closely follows the electrochemical variations during the PEDOT:PSS's film growth, described by modeled equivalent circuits. The film's properties change during polymerization in relation to the supporting electrode size, its surface chemistry, and the deposition time. The film growth structures polymeric morphology in a confluent layer with a strong thickness increase before reaching its mechanical surface failure. Before this point, the film remains stable over a hundred cycles of applied potential strain in a defined redox window. These evaluations benchmark the PEDOT:PSS film properties during its electropolymerization toward electrochemically tunable transducers for bioelectronics. |
| first_indexed | 2024-03-12T01:30:48Z |
| format | Article |
| id | doaj.art-f4119e7866d444fc80dda84279ac0282 |
| institution | Directory Open Access Journal |
| issn | 2199-160X |
| language | English |
| last_indexed | 2024-03-12T01:30:48Z |
| publishDate | 2023-09-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj.art-f4119e7866d444fc80dda84279ac02822023-09-12T05:36:19ZengWiley-VCHAdvanced Electronic Materials2199-160X2023-09-0199n/an/a10.1002/aelm.202201282Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film GrowthHajar Mousavi0Laura M Ferrari1Amelia Whiteley2Esma Ismailova3Mines Saint‐Etienne Centre CMP Department of BEL Gardanne F‐13541 FranceINRIA Université Côte d'Azur Sophia Antipolis 06902 FranceMines Saint‐Etienne Centre CMP Department of BEL Gardanne F‐13541 FranceMines Saint‐Etienne Centre CMP Department of BEL Gardanne F‐13541 FranceAbstract In bioelectronics, conducting polymer coatings allow the reduction of the impedance of metallic electrodes and facilitate the translation of bioelectrical signals at their interface. Such coatings can be made using thin film deposition from a solution or direct synthesis via electrodeposition. The electrical control over the deposition offers the possibility for a fine‐tuning of the film's thickness and structure. However, the mechanical stability of such coatings mainly suffer from their poor adhesion to the electrode surface and film cracking. Here, an extended study on the kinetics of poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) electropolymerization and the evolution of its physicochemical properties is provided. The impedance spectroscopy closely follows the electrochemical variations during the PEDOT:PSS's film growth, described by modeled equivalent circuits. The film's properties change during polymerization in relation to the supporting electrode size, its surface chemistry, and the deposition time. The film growth structures polymeric morphology in a confluent layer with a strong thickness increase before reaching its mechanical surface failure. Before this point, the film remains stable over a hundred cycles of applied potential strain in a defined redox window. These evaluations benchmark the PEDOT:PSS film properties during its electropolymerization toward electrochemically tunable transducers for bioelectronics.https://doi.org/10.1002/aelm.202201282electropolymerizationimpedanceorganic electronicsPEDOT:PSSthin films |
| spellingShingle | Hajar Mousavi Laura M Ferrari Amelia Whiteley Esma Ismailova Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film Growth Advanced Electronic Materials electropolymerization impedance organic electronics PEDOT:PSS thin films |
| title | Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film Growth |
| title_full | Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film Growth |
| title_fullStr | Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film Growth |
| title_full_unstemmed | Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film Growth |
| title_short | Kinetics and Physicochemical Characteristics of Electrodeposited PEDOT:PSS Thin Film Growth |
| title_sort | kinetics and physicochemical characteristics of electrodeposited pedot pss thin film growth |
| topic | electropolymerization impedance organic electronics PEDOT:PSS thin films |
| url | https://doi.org/10.1002/aelm.202201282 |
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