Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical Transistors
Abstract A series of semiconducting small molecules with bithiophene or bis‐3,4‐ethylenedioxythiophene cores are designed and synthesized. The molecules display stable reversible oxidation in solution and can be reversibly oxidized in the solid state with aqueous electrolyte when functionalized with...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2020-06-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202000215 |
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| author | Zachary S. Parr Reem B. Rashid Bryan D. Paulsen Benjamin Poggi Ellasia Tan Mark Freeley Matteo Palma Isaac Abrahams Jonathan Rivnay Christian B. Nielsen |
| author_facet | Zachary S. Parr Reem B. Rashid Bryan D. Paulsen Benjamin Poggi Ellasia Tan Mark Freeley Matteo Palma Isaac Abrahams Jonathan Rivnay Christian B. Nielsen |
| author_sort | Zachary S. Parr |
| collection | DOAJ |
| description | Abstract A series of semiconducting small molecules with bithiophene or bis‐3,4‐ethylenedioxythiophene cores are designed and synthesized. The molecules display stable reversible oxidation in solution and can be reversibly oxidized in the solid state with aqueous electrolyte when functionalized with polar triethylene glycol side chains. Evidence of promising ion injection properties observed with cyclic voltammetry is complemented by strong electrochromism probed by spectroelectrochemistry. Blending these molecules with high molecular weight polyethylene oxide (PEO) is found to improve both ion injection and thin film stability. The molecules and their corresponding PEO blends are investigated as active layers in organic electrochemical transistors (OECTs). For the most promising molecule:polymer blend (P4E4:PEO), p‐type accumulation mode OECTs with µA drain currents, μS peak transconductances, and a µC* figure‐of‐merit value of 0.81 F V−1 cm−1 s−1 are obtained. |
| format | Article |
| id | doaj-art-48bd5fb701d844a59c86c0153d60c4c2 |
| institution | DOAJ |
| issn | 2199-160X |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj-art-48bd5fb701d844a59c86c0153d60c4c22025-08-20T02:46:17ZengWiley-VCHAdvanced Electronic Materials2199-160X2020-06-0166n/an/a10.1002/aelm.202000215Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical TransistorsZachary S. Parr0Reem B. Rashid1Bryan D. Paulsen2Benjamin Poggi3Ellasia Tan4Mark Freeley5Matteo Palma6Isaac Abrahams7Jonathan Rivnay8Christian B. Nielsen9Materials Research Institute and School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UKDepartment of Biomedical Engineering Northwestern University Evanston IL 60202 USADepartment of Biomedical Engineering Northwestern University Evanston IL 60202 USAMaterials Research Institute and School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UKMaterials Research Institute and School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UKMaterials Research Institute and School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UKMaterials Research Institute and School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UKMaterials Research Institute and School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UKDepartment of Biomedical Engineering Northwestern University Evanston IL 60202 USAMaterials Research Institute and School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UKAbstract A series of semiconducting small molecules with bithiophene or bis‐3,4‐ethylenedioxythiophene cores are designed and synthesized. The molecules display stable reversible oxidation in solution and can be reversibly oxidized in the solid state with aqueous electrolyte when functionalized with polar triethylene glycol side chains. Evidence of promising ion injection properties observed with cyclic voltammetry is complemented by strong electrochromism probed by spectroelectrochemistry. Blending these molecules with high molecular weight polyethylene oxide (PEO) is found to improve both ion injection and thin film stability. The molecules and their corresponding PEO blends are investigated as active layers in organic electrochemical transistors (OECTs). For the most promising molecule:polymer blend (P4E4:PEO), p‐type accumulation mode OECTs with µA drain currents, μS peak transconductances, and a µC* figure‐of‐merit value of 0.81 F V−1 cm−1 s−1 are obtained.https://doi.org/10.1002/aelm.202000215π‐conjugated small moleculesmixed ionic‐electronic conductionorganic electrochemical transistors |
| spellingShingle | Zachary S. Parr Reem B. Rashid Bryan D. Paulsen Benjamin Poggi Ellasia Tan Mark Freeley Matteo Palma Isaac Abrahams Jonathan Rivnay Christian B. Nielsen Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical Transistors Advanced Electronic Materials π‐conjugated small molecules mixed ionic‐electronic conduction organic electrochemical transistors |
| title | Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical Transistors |
| title_full | Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical Transistors |
| title_fullStr | Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical Transistors |
| title_full_unstemmed | Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical Transistors |
| title_short | Semiconducting Small Molecules as Active Materials for p‐Type Accumulation Mode Organic Electrochemical Transistors |
| title_sort | semiconducting small molecules as active materials for p type accumulation mode organic electrochemical transistors |
| topic | π‐conjugated small molecules mixed ionic‐electronic conduction organic electrochemical transistors |
| url | https://doi.org/10.1002/aelm.202000215 |
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