Highly sensitive poly(3,4-ethylenedioxythiophene) modified electrodes by electropolymerisation in deep eutectic solvents |
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| Affiliation: | 1. Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Pharmacy, Hebei University, Baoding, 071002, China;2. Key Laboratory of Analytical Science and Technology of Hebei Province & College of Public Health, Hebei University, Baoding, 071002, China;1. Institute of Chemistry, Laboratory of Electrochemistry and Electroanalytical Chemistry, Eötvös Loránd University, Pázmány P. s. 1/A, H-1117 Budapest, Hungary;2. Chemical Department, St. Petersburg State University, Universitetskii pr. 26, 198504, Russia;1. College of Pharmaceutical Science, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding 071002, China;2. Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China;3. College of Public Health, Hebei University, Baoding 071002, China;4. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 010190, China;1. College of Pharmaceutical Science, Hebei University & Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China;2. Department of Preventive Medicine and Health Management, Hebei University & Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, China;3. Department of Chemistry and Chemical Engineering, Inha University, Incheon 402751, South Korea |
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| Abstract: | 
Deep eutectic solvents are evaluated as media for the electropolymerisation of 3,4-ethylenedioxythiophene (EDOT) for the first time. PEDOT modified glassy carbon electrodes (GCEs) were characterised by cyclic voltammetry, electrochemical impedance spectroscopy and scanning electron microscopy. PEDOT modified GCEs prepared from choline chloride–urea (reline) and choline chloride–ethylene glycol (ethaline) exhibited interesting electrocatalytic and morphological characteristics. Fixed potential sensing of ascorbate at 0.0 V showed a greater electrocatalytic effect, significantly higher sensitivity and lower detection limit than at hitherto reported PEDOT modified electrodes. |
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