%0 Journal Article
%T Photoinduced Electron Transfer Based Ion Sensing within an Optical Fiber
%A Florian V. Englich
%A Tze Cheung Foo
%A Andrew C. Richardson
%A Heike Ebendorff-Heidepriem
%A Christopher J. Sumby
%A Tanya M. Monro
%J Sensors
%D 2011
%I MDPI AG
%R 10.3390/s111009560
%X 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.
%K fluorescence sensor
%K fiber-optic sensor
%K microstructured optical fiber (MOF)
%K photo induced electron transfer (PET)
%K metal ion
%U http://www.mdpi.com/1424-8220/11/10/9560