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Potentiometric Sensors with Polymeric Sensing and Reference Membranes Fully Integrated into a Sample‐Wicking Polyester Textile

Potentiometric Sensors with Polymeric Sensing and Reference Membranes Fully Integrated into a... Responding to current limitations in paper‐based sensors and the increased interest in wearable sensors, we introduce here potentiometric sensors fully integrated into a knitted polyester fabric and their application in aqueous and biological samples. Single layer ion‐sensing devices requiring only 30 μL of sample were fabricated using wax patterning and Ag/AgCl paint. These devices give a Nernstian response to chloride over 4 orders of magnitude – an order of magnitude improvement from analogous paper‐based devices. We also report the penetration of polyester yarns with polymeric hydrophobic and hydrophilic ion‐sensing and reference membranes, all fully embedded within the fabric. These results demonstrate the promise of knitted fabrics as substrates for fully‐integrated potentiometric sensors with improved detection limits. They also elucidate the effect of pore structure on sensor fabrication and performance, thereby affecting how we understand both fabric‐ and paper‐based devices. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Analysis & Sensing Wiley

Potentiometric Sensors with Polymeric Sensing and Reference Membranes Fully Integrated into a Sample‐Wicking Polyester Textile

Analysis & Sensing , Volume 1 (4) – Nov 1, 2021

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References (53)

Publisher
Wiley
Copyright
© 2021 Wiley‐VCH GmbH
eISSN
2629-2742
DOI
10.1002/anse.202100027
Publisher site
See Article on Publisher Site

Abstract

Responding to current limitations in paper‐based sensors and the increased interest in wearable sensors, we introduce here potentiometric sensors fully integrated into a knitted polyester fabric and their application in aqueous and biological samples. Single layer ion‐sensing devices requiring only 30 μL of sample were fabricated using wax patterning and Ag/AgCl paint. These devices give a Nernstian response to chloride over 4 orders of magnitude – an order of magnitude improvement from analogous paper‐based devices. We also report the penetration of polyester yarns with polymeric hydrophobic and hydrophilic ion‐sensing and reference membranes, all fully embedded within the fabric. These results demonstrate the promise of knitted fabrics as substrates for fully‐integrated potentiometric sensors with improved detection limits. They also elucidate the effect of pore structure on sensor fabrication and performance, thereby affecting how we understand both fabric‐ and paper‐based devices.

Journal

Analysis & SensingWiley

Published: Nov 1, 2021

Keywords: Electrochemistry; ion-selective electrodes; miniaturized sensors; potentiometry; textiles

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