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Type: Journal article
Title: Photoinduced electron transfer based ion sensing within an optical fiber
Author: Englich, F.V.
Foo, T.C.
Richardson, A.C.
Ebendorff-Heidepriem, H.
Sumby, C.J.
Monro, T.M.
Citation: Sensors, 2011; 11(10):9560-9572
Publisher: Molecular Diversity Preservation International (MDPI)
Issue Date: 2011
ISSN: 1424-8239
Statement of
Florian V. Englich, Tze Cheung Foo, Andrew C. Richardson, Heike Ebendorff-Heidepriem, Christopher J. Sumby and Tanya M. Monro
Abstract: We combine suspended-core microstructured optical fibers with the photoinduced electron transfer (PET) effect to demonstrate a new type of fluorescent optical fiber-dip sensing platform for small volume ion detection. A sensor design based on a simple model PET-fluoroionophore system and small core microstructured optical fiber capable of detecting sodium ions is demonstrated. The performance of the dip sensor operating in a high sodium concentration regime (925 ppm Na+) and for lower sodium concentration environments (18.4 ppm Na+) is explored and future approaches to improving the sensor’s signal stability, sensitivity and selectivity are discussed.
Keywords: Cations
Fluorescent Dyes
Spectrometry, Fluorescence
Fiber Optic Technology
Optical Fibers
Description: A supplementary file is also included.
Rights: © 2011 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (
DOI: 10.3390/s111009560
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