Water uptake in the hydrophilic poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) solid-contact of all-solid-state polymeric ion-selective electrodes

J P Veder; Roland De Marco; G Clarke; San Ping Jiang; K Prince; E Pretsch; Eric Bakker

doi:10.1039/C1AN15267J

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Water uptake in the hydrophilic poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) solid-contact of all-solid-state polymeric ion-selective electrodes

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Water uptake in the hydrophilic poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) solid-contact of all-solid-state polymeric ion-selective electrodes

J P Veder, Roland De Marco, G Clarke, San Ping Jiang, K Prince, E Pretsch and Eric Bakker

The Analyst, Vol.136(16), pp.3252-3258

2011

DOI: https://doi.org/10.1039/C1AN15267J

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Abstract

solid state

ion-selective electrodes

Solid-contact (SC) ion-selective electrodes (ISEs) utilizing thin films of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and plasticized poly(vinylchloride) (PVC) have been produced using a spin casting procedure. This study was carried out with a view of characterizing this popular and well known SC ISE using a series of complementary surface analysis techniques. This work revealed that PEDOT:PSS prevents the separation of an undesirable water layer at the buried interface of this SC ISE due to the high miscibility of water in the hydrophilic PEDOT:PSS layer. The lack of a clearly defined and molecularly sharp buried interface prohibits the formation of a distinct water layer presumably by eliminating sites that promote the accumulation of water. This outcome is important to the chemical sensor community since it provides further insights into the compatibility of sensor components in SC ISEs.

Details

Title: Water uptake in the hydrophilic poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) solid-contact of all-solid-state polymeric ion-selective electrodes
Authors: J P Veder (Author) - Curtin University of Technology
Roland De Marco (Author) - Curtin University of Technology
G Clarke (Author) - Curtin University of Technology
San Ping Jiang (Author) - Curtin University of Technology
K Prince (Author) - Australian Nuclear Science and Technology Organization
E Pretsch (Author) - Institute of Biogeochemistry and Pollutant Dynamics, Switzerland
Eric Bakker (Author) - University of Geneva, Switzerland
Publication details: The Analyst, Vol.136(16), pp.3252-3258
Publisher: Royal Society of Chemistry (R S C) Publications
Date published: 2011
DOI: 10.1039/C1AN15267J
ISSN: 0003-2654
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99449749602621
Output Type: Journal article

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