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Reversible Electronic Solid-Gel Switching of a Conjugated Polymer
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- Gladisch, Johannes (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Stavrinidou, Eleni (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Ghosh, Sarbani (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- (creator_code:org_t)
- 2019-10-28
- 2020
- English.
- In: ADVANCED SCIENCE. - : WILEY. - 2198-3844. ; 7:2
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Conjugated polymers exhibit electrically driven volume changes when included in electrochemical devices via the exchange of ions and solvent. So far, this volumetric change is limited to 40% and 100% for reversible and irreversible systems, respectively, thus restricting potential applications of this technology. A conjugated polymer that reversibly expands by about 300% upon addressing, relative to its previous contracted state, while the first irreversible actuation can achieve values ranging from 1000-10 000%, depending on the voltage applied is reported. From experimental and theoretical studies, it is found that this large and reversible volumetric switching is due to reorganization of the polymer during swelling as it transforms between a solid-state phase and a gel, while maintaining percolation for conductivity. The polymer is utilized as an electroactive cladding to reduce the void sizes of a porous carbon filter electrode by 85%.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Textil-, gummi- och polymermaterial (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Textile, Rubber and Polymeric Materials (hsv//eng)
Keyword
- conjugated polymers; electroactive materials; hydrogels; volume change
Publication and Content Type
- ref (subject category)
- art (subject category)
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- McCulloch, Iain
- Berggren, Magnus
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- ENGINEERING AND TECHNOLOGY
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