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Photoinduced electron transfer based ion sensing within an optical fiber.


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.

SUBMITTER: Englich FV 

PROVIDER: S-EPMC3231295 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature

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Photoinduced electron transfer based ion sensing within an optical fiber.

Englich Florian V FV   Foo Tze Cheung TC   Richardson Andrew C AC   Ebendorff-Heidepriem Heike H   Sumby Christopher J CJ   Monro Tanya M TM  

Sensors (Basel, Switzerland) 20111011 10


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 c  ...[more]

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