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dc.contributor.authorCampbell, Iain A.
dc.contributor.authorTurnbull, Graham
dc.identifier.citationCampbell , I A & Turnbull , G 2021 , ' A kinetic model of thin-film fluorescent sensors for strategies to enhance chemical selectivity ' , Physical Chemistry Chemical Physics , vol. 23 , no. 18 , pp. 10791-10798 .
dc.identifier.otherPURE: 273979477
dc.identifier.otherPURE UUID: 0b7d62a7-8d3b-4fe7-abea-5cc983b76dd5
dc.identifier.otherWOS: 000645300600001
dc.identifier.otherScopus: 85106147442
dc.descriptionAuhtors acknowledge funding from the Engineering and Physical Sciences Research Council grant number EP/N509759/1 and we also acknowledge funding from NATO Science for Peace & Security under grant agreement MYP G5355.en
dc.description.abstractThin film chemical sensors are widely used in environmental and industrial applications due to their scalable fabrication and high sensitivity, however they often suffer from low specificity limiting their ability to discriminate between analytes. In this paper we analyse the influence of molecular diffusion and binding interactions on the optical response of thin film fluorescent chemical sensors. We use a computational model to calculate the dynamics of fluorescence quenching due to sorption and desorption of analyte molecules, and compare this with experimental measurements of a conjugated polymer sensor for nitroaromatic vapour. We find that to increase selectivity, such sensors should use thinner films, analyses should concentrate on the recovery dynamics, and sensor materials should be chosen to provide sensor-analyte combinations where diffusion is hindered by strong sensor-analyte binding interactions.
dc.relation.ispartofPhysical Chemistry Chemical Physicsen
dc.rightsCopyright © The Authors 2021. Open Access. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.en
dc.subjectQC Physicsen
dc.titleA kinetic model of thin-film fluorescent sensors for strategies to enhance chemical selectivityen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Sir James Mackenzie Institute for Early Diagnosisen
dc.contributor.institutionUniversity of St Andrews.Centre for Biophotonicsen
dc.description.statusPeer revieweden

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