Coulometric Response of H+-Selective Solid-Contact Ion-Selective Electrodes and Its Application in Flexible Sensors†
Tingting Han
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
Search for more papers by this authorTao Song
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong, 510640 China
Search for more papers by this authorShiyu Gan
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
Search for more papers by this authorCorresponding Author
Dongxue Han
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
Guangdong Provincial Key Laboratory of Psychoactive Substances Monitoring and Safety, Anti-Drug Technology Center of Guangdong Province, Guangzhou, Guangdong, 510230 China
E-mail: [email protected], [email protected], [email protected]Search for more papers by this authorJohan Bobacka
Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Henriksgatan 2, FI-20500, Turku/Åbo, Finland
Search for more papers by this authorCorresponding Author
Li Niu
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
E-mail: [email protected], [email protected], [email protected]Search for more papers by this authorCorresponding Author
Ari Ivaska
Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Henriksgatan 2, FI-20500, Turku/Åbo, Finland
E-mail: [email protected], [email protected], [email protected]Search for more papers by this authorTingting Han
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
Search for more papers by this authorTao Song
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong, 510640 China
Search for more papers by this authorShiyu Gan
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
Search for more papers by this authorCorresponding Author
Dongxue Han
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
Guangdong Provincial Key Laboratory of Psychoactive Substances Monitoring and Safety, Anti-Drug Technology Center of Guangdong Province, Guangzhou, Guangdong, 510230 China
E-mail: [email protected], [email protected], [email protected]Search for more papers by this authorJohan Bobacka
Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Henriksgatan 2, FI-20500, Turku/Åbo, Finland
Search for more papers by this authorCorresponding Author
Li Niu
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, c/o School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong, 510006 China
E-mail: [email protected], [email protected], [email protected]Search for more papers by this authorCorresponding Author
Ari Ivaska
Åbo Akademi University, Johan Gadolin Process Chemistry Centre, Laboratory of Molecular Science and Engineering, Henriksgatan 2, FI-20500, Turku/Åbo, Finland
E-mail: [email protected], [email protected], [email protected]Search for more papers by this author† Dedicated to Professor Erkang Wang on the Occasion of His 90th Birthday.
Comprehensive Summary
The analytical performance of H+-selective solid-contact ion-selective electrodes (SCISEs) based on solid contact polyaniline doped with chloride (PANI(Cl)) and poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT(PSS)) was characterized by a developed coulometric signal transduction method. PEDOT(PSS) solid contact is covered by PVC based H+-selective membrane. The obtained coulometric signal demonstrates that the cumulated charge can be amplified by increasing the capacitance of solid contact. SCISEs covered with spin-coated membrane behave faster amperometric response than electrodes with drop-cast membrane. In contrast to earlier works, the amperometric response and impedance spectrum demonstrates H+ transfer through SCISEs is independent from the thickness of membrane. The exceptional behavior of PANI(Cl) H+-SCISEs shows that the capacitance estimated from impedance spectrum at low frequency 10 mHz and coulometric signal of PANI(Cl) based SCISEs is influenced by the applied potentials, whereas PEDOT(PSS) solid contact is independent from the chosen applied potentials. Furthermore, preliminary investigations of coulometric signal transduction on flexible pH sensor implies its potential applications in wearable sensors for sweat ion concentration detection.
Supporting Information
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| cjoc202200500-sup-0001-Supinfo.pdfPDF document, 375.3 KB |
Appendix S1: Supporting Information |
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Citing Literature
15 January 2023
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