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Controlling swellin...
Controlling swelling in mixed transport polymers through alkyl side-chain physical cross-linking
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- Siemons, Nicholas (författare)
- Stanford University,Imperial College of Science, Technology and Medicine
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- Pearce, Drew (författare)
- Imperial College of Science, Technology and Medicine
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- Yu, Hang (författare)
- Imperial College of Science, Technology and Medicine
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visa fler...
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- Tuladhar, Sachetan M. (författare)
- Imperial College of Science, Technology and Medicine
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- LeCroy, Garrett (författare)
- Stanford University
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- Sheelamanthula, Rajendar (författare)
- King Abdullah University of Science and Technology (KAUST)
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- Hallani, Rawad K. (författare)
- King Abdullah University of Science and Technology (KAUST)
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- Salleo, Alberto (författare)
- Stanford University
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- McCulloch, Iain (författare)
- King Abdullah University of Science and Technology (KAUST)
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- Giovannitti, Alexander, 1987 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Stanford University
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- Frost, Jarvist M. (författare)
- Imperial College of Science, Technology and Medicine
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- Nelson, J. (författare)
- Imperial College of Science, Technology and Medicine
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visa färre...
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - 0027-8424 .- 1091-6490. ; 120:35
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Semiconducting conjugated polymers bearing glycol side chains can simultaneously transport both electronic and ionic charges with high charge mobilities, making them ideal electrode materials for a range of bioelectronic devices. However, heavily glycolated conjugated polymer films have been observed to swell irreversibly when subjected to an electrochemical bias in an aqueous electrolyte. The excessive swelling can lead to the degradation of their microstructure, and subsequently reduced device performance. An effective strategy to control polymer film swelling is to copolymerize glycolated repeat units with a fraction of monomers bearing alkyl side chains, although the microscopic mechanism that constrains swelling is unknown. Here we investigate, experimentally and computationally, a series of archetypal mixed transporting copolymers with varying ratios of glycolated and alkylated repeat units. Experimentally we observe that exchanging 10% of the glycol side chains for alkyl leads to significantly reduced film swelling and an increase in electrochemical stability. Through molecular dynamics simulation of the amorphous phase of the materials, we observe the formation of polymer networks mediated by alkyl side-chain interactions. When in the presence of water, the network becomes increasingly connected, counteracting the volumetric expansion of the polymer film.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- organic electrochemical devices
- conjugated polymers
- soft materials
- mixed electronic-ionic conductors
- structure-property relationships
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Siemons, Nichola ...
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Pearce, Drew
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Yu, Hang
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Tuladhar, Sachet ...
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LeCroy, Garrett
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Sheelamanthula, ...
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visa fler...
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Hallani, Rawad K ...
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Salleo, Alberto
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McCulloch, Iain
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Giovannitti, Ale ...
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Frost, Jarvist M ...
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Nelson, J.
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Polymerkemi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Fysikalisk kemi
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Proceedings of t ...
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Chalmers tekniska högskola