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Chemical optical sensing based on luminescence lifetime measurements: A caveat

dc.contributor.authorHendrick, F.
dc.contributor.authorDonckt, E.V.
dc.date1999
dc.date.accessioned2017-05-09T11:58:43Z
dc.date.available2017-05-09T11:58:43Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/5380
dc.descriptionOptical sensors based on the luminescence lifetime quenching are often considered as being more attractive than luminescence intensity-based sensors. However, depending on the nature of the luminophore-matrix system considered, the relative positions of the I0/I and τ0/τ curves as a function of the quencher concentration can vary considerably. With a view to rationalize these observations, numerical computations of the I0/I and τ0/τ ratios have been performed in a two-site model. It is shown that this simple model can explain the various observations and that lifetime measurements performed by phase fluorometry are sometimes not suitable for analytical application.
dc.languageeng
dc.titleChemical optical sensing based on luminescence lifetime measurements: A caveat
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeFluorometers
dc.subject.freeLuminescence
dc.subject.freeMathematical models
dc.subject.freeNumerical analysis
dc.subject.freeOptical sensors
dc.subject.freeLuminescence lifetime
dc.subject.freePhase fluorometry
dc.subject.freeStern-Volmer plot
dc.subject.freeChemical sensors
dc.source.titleSensors and Actuators, B: Chemical
dc.source.volume61
dc.source.issue1
dc.source.page218-221
Orfeo.peerreviewedYes
dc.identifier.doi10.1016/S0925-4005(99)00263-4
dc.identifier.scopus2-s2.0-0033554761


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