NDLI: The ion exchange of the polypyrrole films

Content Provider	IEEE Xplore Digital Library
Author	Tamm, I. Hallik, A. Silk, T. Alumaa, A.
Copyright Year	1994
Description	Author affiliation: Tartu University (Tamm, I.)
Abstract	Summary form only given. Several attempts to prepare ion sensors based on the ion-exchange properties of the conductive polymers have been made in recent years. In this study physico-chemical characteristics of Ppy films doped with some organic and inorganic ions, and their fuctioning as ion exchangers were investigated. The change of anion-cation participatioj ratio in polymer redox-process depending on the nature of used dopants and solvents was examined by voltametric, ellipsometric and ESR methods. The influence of the cation nature on the ion-exchange properties of the PPy films was established for both big and small dopant anione incorporated in PPy matrix. The dependence of PPy electrode potentiometric function on the film's substrate material, doping anion, preceding electrochemical and conditioning treatment, and film thickness a characterized in this study. The whole potentiometric response signal can be divided into two parts, the fast one and the following long-time response. The fast potentiometric function was found to be independent of the redox state of the film, with poor selectivity and without prolonged stability.
Starting Page	342
Ending Page	342
File Size	82754
Page Count	1
File Format	PDF
DOI	10.1109/STSM.1994.835414
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-07-24
Publisher Place	Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solvents Chemistry Fractionation Temperature Laboratories Atmosphere Nitrogen Polymers Thermal stability Physics
Content Type	Text
Resource Type	Article

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