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Conducting polymer electrodes for gel electrophoresis
Katarina Bengtsson1, Sara Nilsson1, Nathaniel D Robinson1
1Transport and Separations Group, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden.
Plos One
|March 4, 2014
Summary
Poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes reduce water electrolysis in gel electrophoresis. This innovation minimizes by-products and maintains gel image quality and ionic transport during separations.
Area of Science:
- Electrochemistry
- Polymer Science
- Analytical Chemistry
Background:
- Electrophoresis commonly relies on water electrolysis at electrodes, generating by-products and consuming water.
- Previous work showed poly(3,4-ethylenedioxythiophene) (PEDOT) mitigates electrolysis in capillary electrophoresis systems.
Purpose of the Study:
- To extend the use of PEDOT electrodes to gel electrophoresis.
- To assess the impact of PEDOT electrodes on gel electrophoresis performance and analysis.
Main Methods:
- Integration of PEDOT-containing electrodes into a commercial polyacrylamide gel electrophoresis (PAGE) system.
- Evaluation of electrolysis mitigation by PEDOT electrodes.
- Assessment of gel image quality post-electrophoresis.
- Measurement of ionic transport during electrophoretic separation.
Main Results:
- PEDOT electrodes effectively mitigate water electrolysis in gel electrophoresis setups.
- The use of PEDOT electrodes had minimal adverse effects on the resulting gel images.
- Ionic transport during separation remained largely unaffected by the presence of PEDOT electrodes.
Conclusions:
- PEDOT electrodes offer a viable solution to reduce electrolysis by-products in gel electrophoresis.
- This approach preserves analytical integrity, making it suitable for standard PAGE systems.
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