Electrochemistry and Ion Sensing Properties of Conducting Hydrogel Layers Based on Polypyrrole and Alkoxysulfonated Poly(3,4‐ethylenedioxythiophene) (PEDOT‐S) | Zendy

Sobkowiak Marek | Zendy; Sokalski Tomasz | Zendy; Lewenstam Andrzej | Zendy; Gabrielsson Roger | Zendy; Inganäs Olle | Zendy; Milczarek Grzegorz | Zendy

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Electrochemistry and Ion Sensing Properties of Conducting Hydrogel Layers Based on Polypyrrole and Alkoxysulfonated Poly(3,4‐ethylenedioxythiophene) (PEDOT‐S)

Author(s) -

Sobkowiak Marek,

Sokalski Tomasz,

Lewenstam Andrzej,

Gabrielsson Roger,

Inganäs Olle,

Milczarek Grzegorz

Publication year - 2014

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201300487

Subject(s) - pedot:pss , poly(3,4 ethylenedioxythiophene) , conductive polymer , polypyrrole , materials science , oxidizing agent , polymerization , aqueous solution , electrochemistry , electrode , potentiometric titration , chemical engineering , polymer , polymer chemistry , inorganic chemistry , chemistry , organic chemistry , composite material , engineering

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 54 mV/decade. The response was specific to Ag + compared to a series of alkali and transition‐metal cations (p K Ag/M >3.7).

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