Electrochemical Preparation of Poly(3,4-Ethylenedioxythiophene) Layers on Gold Microelectrodes for Uric Acid-Sensing Applications
| Autor: | Paul A. Kilmartin, Mahsa Motshakeri, Anthony R. J. Phillips |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Aqueous solution
Materials science General Immunology and Microbiology Polymers General Chemical Engineering General Neuroscience Bridged Bicyclo Compounds Heterocyclic Electrochemistry Lithium perchlorate General Biochemistry Genetics and Molecular Biology Uric Acid chemistry.chemical_compound chemistry PEDOT:PSS Chemical engineering Propylene carbonate Gold Cyclic voltammetry Acetonitrile Microelectrodes Poly(3 4-ethylenedioxythiophene) |
| Zdroj: | Journal of Visualized Experiments. |
| ISSN: | 1940-087X |
| Popis: | Two different methods for the synthesis of poly(3,4-ethylenedioxythiophene) (PEDOT) on gold electrodes are described, using electropolymerization of 3,4-ethylenedioxythiophene (EDOT) monomer in an aqueous and an organic solution. Cyclic voltammetry (CV) was used in the synthesis of PEDOT thin layers. Lithium perchlorate (LiClO4) was used as a dopant in both aqueous (aqueous/acetonitrile (ACN)) and organic (propylene carbonate (PC)) solvent systems. After the PEDOT layer was created in the organic system, the electrode surface was acclimatized by successive cycling in an aqueous solution for use as a sensor for aqueous samples. The use of an aqueous-based electropolymerization method has the potential benefit of removing the acclimatization step to have a shorter sensor preparation time. Although the aqueous method is more economical and environmentally friendly than the organic solvent method, superior PEDOT formation is obtained in the organic solution. The resulting PEDOT electrode surfaces were characterized by scanning electron microscopy (SEM), which showed the constant growth of PEDOT during electropolymerization from the organic PC solution, with rapid fractal-type growth on gold (Au) microelectrodes. |
| Databáze: | OpenAIRE |
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