Electrochemistry and Ion Sensing Properties of Conducting Hydrogel Layers Based on Polypyrrole and Alkoxysulfonated Poly(3,4-ethylenedioxythiophene) (PEDOT-S)
2014 (English)In: Electroanalysis, ISSN 1040-0397, E-ISSN 1521-4109, Vol. 26, no 4, 739-747 p.Article in journal (Refereed) Published
Acidic aqueous solutions containing pyrrole and alkoxysulfonated PEDOT derivative (PEDOT-S) were found to undergo polymerization in the absence of an external oxidizing agent. The product was a nearly black-colored conducting hydrogel that after separation could be dispersed in water or acetone. The suspensions could be used to deposit cast films on a polycrystalline gold electrode. The polymer modified electrode showed a nearly Nernstian potentiometric response to Ag+ cations in the concentration range of 10(-5)-10(-1)M with the slope of 54mV/decade. The response was specific to Ag+ compared to a series of alkali and transition-metal cations (pK(Ag/M)greater than3.7).
Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2014. Vol. 26, no 4, 739-747 p.
Polypyrrole; Ion selective electrodes; PEDOT-S; Autopolymerization
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-107457DOI: 10.1002/elan.201300487ISI: 000333749500010OAI: oai:DiVA.org:liu-107457DiVA: diva2:724311