Durable PEDOT:PSS films obtained from modified water-based inks for electrochemical sensors

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Michal Wagner, Grzegorz Lisak, Ari Ivaska, Johan Bobacka
Publisher: ELSEVIER SCIENCE SA
Publication year: 2013
Journal: Sensors and Actuators B: Chemical
Journal acronym: SENSOR ACTUAT B-CHEM
Volume number: 181
Start page: 694
End page: 701
Number of pages: 8
ISSN: 0925-4005
eISSN: 1873-3077


Abstract

Printing of conducting polymer films from water-based inks is a powerful method that can facilitate the fabrication of various types of electrochemical sensors. This paper reports on the use of ethylene glycol and quaternary ammonium salts as additives to water-based poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) inks in order to obtain conducting polymer films with improved adhesion to a carbon-based electrode substrate in aqueous environment. The modified PEDOT:PSS films deposited on glassy carbon were studied in aqueous solutions by cyclic voltammetry, electrochemical impedance spectroscopy, and potentiometry. It was found that PEDOT:PSS films modified with ethylene glycol and quaternary ammonium salts exhibit excellent adhesion to glassy carbon even after immersion in aqueous solutions for more than two months. The modified PEDOT:PSS films were electroactive, showed relatively fast ion transport properties, and were successfully applied as solid-contact material in lead(II)-selective electrodes.


Keywords

Adhesion, Chemical sensor, Conducting polymer ink, Ion crosslinking, PEDOT:PSS

Last updated on 2020-02-04 at 05:41