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Electronic control ...
Electronic control over detachment of a self-doped water-soluble conjugated polyelectrolyte
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- Persson, Kristin M (författare)
- Linköpings universitet,Fysik och elektroteknik,Tekniska högskolan
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- Gabrielsson, Roger (författare)
- Linköpings universitet,Kemi,Tekniska fakulteten
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- Sawatdee, Anurak (författare)
- RISE,Acreo,Department of Printed Electronics, Acreo Swedish ICT AB, Norrköping, Sweden
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- Nilsson, David (författare)
- RISE,Acreo,Department of Printed Electronics, Acreo Swedish ICT AB, Norrköping, Sweden
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- Konradsson, Peter (författare)
- Linköpings universitet,Kemi,Tekniska fakulteten
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- Berggren, Magnus (författare)
- Linköpings universitet,Fysik och elektroteknik,Tekniska högskolan
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(creator_code:org_t)
- 2014-05-20
- 2014
- Engelska.
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Ingår i: Langmuir. - : American Chemical Society. - 0743-7463 .- 1520-5827. ; 30:21, s. 6257-6266
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Water-soluble conducting polymers are of interest to enable more versatile processing in aqueous media as well as to facilitate interactions with biomolecules. Here, we report a substituted poly(3,4-ethylenedioxythiophene) derivative (PEDOT-S:H) that is fully water-soluble and self-doped. When electrochemically oxidizing a PEDOT-S:H thin film, the film detaches from the underlying electrode. The oxidation of PEDOT-S:H starts with an initial phase of swelling followed by cracking before it finally disrupts into small flakes and detaches from the electrode. We investigated the detachment mechanism and found that parameters such as the size, charge, and concentration of ions in the electrolyte, the temperature, and also the pH influence the characteristics of detachment. When oxidizing PEDOT-S:H, the positively charged polymer backbone is balanced by anions from the electrolyte solution and also by the sulfonate groups on the side chains (more self-doping). From our experiments, we conclude that detachment of the PEDOT-S:H film upon oxidation occurs in part due to swelling caused by an inflow of solvated anions and associated water and in part due to chain rearrangements within the film, caused by more self-doping. We believe that PEDOT-S:H detachment can be of interest in a number of different applications, including addressed and active control of the release of materials such as biomolecules and cell cultures. © 2014 American Chemical Society.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
- NATURVETENSKAP -- Biologi -- Cellbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Cell Biology (hsv//eng)
Nyckelord
- Biomolecules
- Cell culture
- Chains
- Conducting polymers
- Control
- Electrodes
- Electrolytes
- Ions
- Active control
- Conjugated polyelectrolytes
- Electrolyte solutions
- Electronic controls
- pH influences
- Positively charged
- Substituted polies
- Sulfonate groups
- Semiconductor doping
- anion
- electrolyte
- fused heterocyclic rings
- oxygen
- poly(3
- 4-ethylene dioxythiophene)
- polymer
- solvent
- water
- atomic force microscopy
- chemistry
- electrochemistry
- electrode
- materials testing
- pH
- solubility
- temperature
- Anions
- Bicyclo Compounds
- Heterocyclic
- Hydrogen-Ion Concentration
- Microscopy
- Atomic Force
- Polymers
- Solvents
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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