Stiffness quantification of conductive polymers for bioelectrodes
Abstract
ABSTRACT Conductive polymer (CP) coatings can improve the performance of metallic bioelectrodes in implantable devices, a benefit which is partially attributed to the “softer” material interface. However, due to the nature of CP fabrication on metallic substrates, accurate quantification of mechanical properties has been difficult to achieve. This study demonstrates that peak‐force quantitative nanomechanical mapping (PF‐QNM) is a robust technique for determining the modulus of CP coatings. The effect of dopant size, chemistry, and film hydration on the mechanical properties of poly(3,4‐ethylene dioxythiophene) (PEDOT) is also examined. Analysis of PEDOT doped with poly(styrene sulfonate) produced across five different thicknesses confirms the utility of PF‐QNM in yielding quantitative, repeatable moduli in both the dry and hydrated state. By doping PEDOT with paratoluene sulfonate and perchlorate (ClO4) it is shown that the hydrophilicity and the size of the dopant are both critical factors influencing CP mechanical properties in the hydrated environment. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys.2014,52, 666–675
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Conductive polymers are considerably softer than metals, flexible and conformable, and have a high charge injection capacity.
“Conductive polymers have been widely used in implantable devices for research as they are considerably softer than metals, flexible and conformable, and have a high charge injection capacity [166][167][168][169][170].”
From Advances in visual prostheses: engineering and biological challenges (2022) · cites this paper as [166]
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- Authors
- Hassarati, R. T., Goding, J. A., Baek, S., Patton, A. J., Poole‐Warren, L. A., & Green, R. A.
- Affiliations
- UNSW Sydney (AU)
- Graduate School of Biomedical Engineering University of New South Wales Sydney 2052 New South Wales Australia
- Corresponding author
- Green, Rylie A.
- Venue
- Journal of Polymer Science Part B Polymer Physics
- Publisher
- Wiley
- Published
- 2014-02-26
- Volume
- 52
- Issue
- 9
- Pages
- 666-675
- ISSN
- 0887-6266 (ISSN-L)
- 1099-0488
- OpenAlex
- W2159688165
- Cited by
- 35
- References
- 26
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 3 · 2023: 4 · 2022: 2 · 2021: 1 · 2020: 2 · 2019: 4 · 2018: 2 · 2017: 5 · 2016: 2 · 2015: 6 · 2014: 1
- FWCI
- 3.26
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Polymer Science Part B Polymer Physics (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Conducting polymers and applications
- Physical Sciences › Materials Science › Surfaces, Coatings and Films › Polymer Surface Interaction Studies
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Force Microscopy Techniques and Applications
- Keywords
- conducting polymers, bioelectrodes, PEDOT, polystyrene sulfonate, perchlorate doping, elastic modulus, film hydration, hydrophilicity, biomedical implants
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