Synchrotron Radiation/Fourier Transform-Infrared Microspectroscopy Study of Undesirable Water Inclusions in Solid-Contact Polymeric Ion-Selective Electrodes

J P Veder; K Patel; G Clarke; E Grygolowicz-Pawlak; D S Silvester; Roland De Marco; E Pretsch; Eric Bakker

doi:10.1021/ac101009n

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Synchrotron Radiation/Fourier Transform-Infrared Microspectroscopy Study of Undesirable Water Inclusions in Solid-Contact Polymeric Ion-Selective Electrodes

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Synchrotron Radiation/Fourier Transform-Infrared Microspectroscopy Study of Undesirable Water Inclusions in Solid-Contact Polymeric Ion-Selective Electrodes

J P Veder, K Patel, G Clarke, E Grygolowicz-Pawlak, D S Silvester, Roland De Marco, E Pretsch and Eric Bakker

Analytical Chemistry, Vol.82(14), p.6203–6207

2010

DOI: https://doi.org/10.1021/ac101009n

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Abstract

solid-contact-ion-selective electrodes

water inclusions

This paper reports on three-dimensional synchrotron radiation/Fourier transform-infrared microspectroscopy (SR/FT-IRM) imaging studies of water inclusions at the buried interface of solid-contact-ion-selective electrodes (SC-ISEs). It is our intention to describe a nondestructive method that may be used in surface studies of the buried interfaces of materials, especially multilayers of polymers. Herein, we demonstrate the power of SR/FT-IRM for studying water inclusions at the buried interfaces of SC-ISEs. A poly(methyl methacrylate)-poly(decyl methacyrlate) [PMMA-PDMA] copolymer revealed the presence of micrometer sized inclusions of water at the gold/membrane interface, while a coupling of a hydrophobic solid contact of poly(3-octylthiophene 2,5-diyl) (POT) prevented the accumulation of water at the buried interface. A similar study with a poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) [PEDOT/PSS] solid contact also revealed an absence of distinct micrometer-sized pools of water; however, there were signs of absorption of water accompanied by swelling of the PEDOT/PSS underlayer, and these membrane zones are enriched with respect to water

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Title: Synchrotron Radiation/Fourier Transform-Infrared Microspectroscopy Study of Undesirable Water Inclusions in Solid-Contact Polymeric Ion-Selective Electrodes
Authors: J P Veder (Author) - Curtin University of Technology
K Patel (Author) - Curtin University of Technology
G Clarke (Author) - Curtin University of Technology
E Grygolowicz-Pawlak (Author) - Curtin University of Technology
D S Silvester (Author) - Curtin University of Technology
Roland De Marco (Author) - Curtin University of Technology
E Pretsch (Author) - Institute of Biogeochemistry and Pollutant Dynamics, Switzerland
Eric Bakker (Author) - Curtin University of Technology
Publication details: Analytical Chemistry, Vol.82(14), p.6203–6207
Publisher: American Chemical Society
Date published: 2010
DOI: 10.1021/ac101009n
ISSN: 0003-2700
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99449238002621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Analytical