Academic Journal
High-Efficiency Ion-Exchange Doping of Conducting Polymers.
| العنوان: | High-Efficiency Ion-Exchange Doping of Conducting Polymers. |
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| المؤلفون: | Jacobs, IE, Lin, Y, Huang, Y, Ren, X, Simatos, D, Chen, C, Tjhe, D, Statz, M, Lai, L, Finn, PA, Neal, WG, D'Avino, G, Lemaur, V, Fratini, S, Beljonne, D, Strzalka, J, Nielsen, CB, Barlow, S, Marder, SR, McCulloch, I, Sirringhaus, H |
| بيانات النشر: | Wiley |
| سنة النشر: | 2021 |
| المجموعة: | Queen Mary University of London: Queen Mary Research Online (QMRO) |
| مصطلحات موضوعية: | conjugated polymers, doping, electrical conductivity, electrochemistry, ion exchange |
| الوصف: | Molecular doping-the use of redox-active small molecules as dopants for organic semiconductors-has seen a surge in research interest driven by emerging applications in sensing, bioelectronics, and thermoelectrics. However, molecular doping carries with it several intrinsic problems stemming directly from the redox-active character of these materials. A recent breakthrough was a doping technique based on ion-exchange, which separates the redox and charge compensation steps of the doping process. Here, the equilibrium and kinetics of ion exchange doping in a model system, poly(2,5-bis(3-alkylthiophen-2-yl)thieno(3,2-b)thiophene) (PBTTT) doped with FeCl3 and an ionic liquid, is studied, reaching conductivities in excess of 1000 S cm-1 and ion exchange efficiencies above 99%. Several factors that enable such high performance, including the choice of acetonitrile as the doping solvent, which largely eliminates electrolyte association effects and dramatically increases the doping strength of FeCl3 , are demonstrated. In this high ion exchange efficiency regime, a simple connection between electrochemical doping and ion exchange is illustrated, and it is shown that the performance and stability of highly doped PBTTT is ultimately limited by intrinsically poor stability at high redox potential. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | e2102988 - ? |
| اللغة: | English |
| Relation: | Adv Mater; https://qmro.qmul.ac.uk/xmlui/handle/123456789/73961 |
| DOI: | 10.1002/adma.202102988 |
| الاتاحة: | https://qmro.qmul.ac.uk/xmlui/handle/123456789/73961 https://doi.org/10.1002/adma.202102988 |
| Rights: | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. ; Attribution 3.0 United States ; http://creativecommons.org/licenses/by/3.0/us/ ; © 2021, The Author(s) |
| رقم الانضمام: | edsbas.3BC256CE |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/adma.202102988 |
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