Hydrophilic polyelectrolyte microspheres as a template for poly(3,4-ethylenedioxythiophene) synthesis

Conducting polymer polyelectrolyte microspheres are typically composed of a cationic conducting polymer and an anionic polymer. The polymer chains inside these microspheres are physically or chemically cross-linked, creating a network that enables high water retention. Poly(3,4-ethylenedioxythiophen...

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Bibliographic Details
Published in:Soft matter 2023-06, Vol.19 (22), p.4144-4154
Main Authors: Laishevkina, Svetlana, Iakobson, Olga, Saprykina, Natalia, Dobrodumov, Anatoly, Chelibanov, Vladimir, Tomšík, Elena, Shevchenko, Natalia
Format: Article
Language:English
Subjects:
Biosensors
Cationic polymerization
Chemical synthesis
Conducting polymers
Crosslinking
Electrochemical analysis
Electrochemistry
Microspheres
Polyelectrolytes
Polymerization
Polymers
Surface layers
Suspension polymerization
Tissue engineering
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Summary:Conducting polymer polyelectrolyte microspheres are typically composed of a cationic conducting polymer and an anionic polymer. The polymer chains inside these microspheres are physically or chemically cross-linked, creating a network that enables high water retention. Poly(3,4-ethylenedioxythiophene) (PEDOT) being an electrically conductive polymer exhibits a high conductivity and has great biotechnological applications. The unique combination of properties of PEDOT containing polyelectrolyte microspheres makes them widely investigated materials for electroresponsive cells, tissue engineering, and bio-sensors. The demand to produce PEDOT with varied properties depending the specific application requires the understanding of the basic principles of template formation. In the present work, we studied the inverse suspension polymerization of p -styrenesulfonic acid in the presence of a cross-linking agent as a synthetic way for the formation of porous polyelectrolyte microspheres. We traced how the nature of the emulsifier affected both the structure of the surface layer of the microspheres and the degree of their cross-linking. The porous structure of polyelectrolyte microspheres obtained is found to promote the polymerization of EDOT in their presence throughout the entire microsphere volume. The structural characteristics of the polyelectrolyte/PEDOT complexes in relation to their electrochemical properties have been studied. The aim of the investigation is to demonstrate the fundamental possibility of PEDOT/polyelectrolyte microspheres interpolymer complexe formation.
ISSN:1744-683X
1744-6848
DOI:10.1039/d3sm00372h