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Tuning the Mechanic...
Tuning the Mechanical and Electrical Properties of Stretchable PEDOT:PSS/Ionic Liquid Conductors
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- Kee, Seyoung (författare)
- Heeger Center for Advanced Materials (HCAM) School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
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- Kim, Nara, 1985- (författare)
- Heeger Center for Advanced Materials (HCAM) School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
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- Park, Hyunmin (författare)
- Heeger Center for Advanced Materials (HCAM) School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
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- Kim, Bong Seong (författare)
- Heeger Center for Advanced Materials (HCAM) School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
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- Teo, Mei Ying (författare)
- Heeger Center for Advanced Materials (HCAM) School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
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- Lee, Seongyu (författare)
- Heeger Center for Advanced Materials (HCAM) School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
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- Kim, Jehan (författare)
- Pohang Accelerator Laboratory Pohang University of Science and Technology Pohang 790‐784 Republic of Korea
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- Lee, Kwanghee (författare)
- Heeger Center for Advanced Materials (HCAM) School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea
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(creator_code:org_t)
- 2020-11-12
- 2020
- Engelska.
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Ingår i: Macromolecular Chemistry and Physics. - : John Wiley & Sons. - 1022-1352 .- 1521-3935. ; 221:23
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Conducting polymers (CPs) constitute a promising building block to establish next-generation stretchable electronics. However, achieving CPs with both high electrical conductivity and outstanding mechanical stretchability beyond flexibility is still a major challenge. Therefore, understanding the key factors controlling such characteristics of CPs is required. Herein, a method to simultaneously manipulate the mechanical and electrical properties of a representative CP, PEDOT:PSS, by modifying ionic liquid (IL) additives is reported. The cation/anion modification of ILs distinctly improves the electrical conductivity of PEDOT:PSS up to ≈1075 S cm−1, and the PEDOT:PSS/IL films showing higher conductivity also exhibit superior electromechanical stretchability, enabling them to maintain their initial conductivity under a tensile strain of 80%. Based on grazing incidence wide angle X-ray scattering and Fourier transform infrared spectroscopy analyses, it is found that the cation/anion-modified ILs control the crystallinity and π–π stacking density of conjugated PEDOT chains and the growth of amorphous PSS domains via IL-induced phase separation between PEDOT and PSS, which can be the origin of the significant conductivity and stretchability improvements in PEDOT:PSS/IL composites. This study provides guidance to develop highly stretchable CP-based conductors/electrodes.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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