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Sensors 2015, 15(12), 31904-31913; doi:10.3390/s151229893

A Dual Sensor for pH and Hydrogen Peroxide Using Polymer-Coated Optical Fibre Tips

1
ARC Centre of Excellence for Nanoscale BioPhotonics, Adelaide 5005, SA, Australia
2
Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, North Terrace, Adelaide 5005, SA, Australia
3
Discipline of Chemistry, School of Physical Sciences, The University of Adelaide, North Terrace, Adelaide 5005, SA, Australia
4
Robinson Research Institute, School of Medicine, The University of Adelaide, North Terrace, Adelaide 5005, SA, Australia
5
University of South Australia, North Terrace, Adelaide 5001, SA, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: W. Rudolf Seitz
Received: 28 October 2015 / Revised: 7 December 2015 / Accepted: 11 December 2015 / Published: 17 December 2015
(This article belongs to the Section Chemical Sensors)
View Full-Text   |   Download PDF [780 KB, uploaded 17 December 2015]   |  

Abstract

This paper demonstrates the first single optical fibre tip probe for concurrent detection of both hydrogen peroxide (H2O2) concentration and pH of a solution. The sensor is constructed by embedding two fluorophores: carboxyperoxyfluor-1 (CPF1) and seminaphtharhodafluor-2 (SNARF2) within a polymer matrix located on the tip of the optical fibre. The functionalised fibre probe reproducibly measures pH, and is able to accurately detect H2O2 over a biologically relevant concentration range. This sensor offers potential for non-invasive detection of pH and H2O2 in biological environments using a single optical fibre. View Full-Text
Keywords: optical fibre; hydrogen peroxide probe; pH sensor; dual sensor; fibre tip sensor optical fibre; hydrogen peroxide probe; pH sensor; dual sensor; fibre tip sensor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Purdey, M.S.; Thompson, J.G.; Monro, T.M.; Abell, A.D.; Schartner, E.P. A Dual Sensor for pH and Hydrogen Peroxide Using Polymer-Coated Optical Fibre Tips. Sensors 2015, 15, 31904-31913.

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