Emission based fiber optic pH sensing with Schiff bases bearing dimethylamino groups

Basit Öğe Kaydı
dc.contributor.authorDerinkuyu S.
dc.contributor.authorErtekin K.
dc.contributor.authorOter O.
dc.contributor.authorDenizalti S.
dc.contributor.authorCetinkaya E.
dc.date.accessioned2019-10-26T23:58:40Z
dc.date.available2019-10-26T23:58:40Z
dc.date.issued2008
dc.departmentEge Üniversitesien_US
dc.description.abstractIn most of the common designs, pH probes rely on weak acidic dyes whose dissociated and undissociated forms have different absorption or emission maxima. In this work dimethylamino bearing fluorescent Schiff bases SB-I and SB-II have been characterized and used for pH sensing. Quantum yield and acidity constant (pKa) calculations of the Schiff bases were performed in the conventional solvents, polyvinyl chloride (PVC) and ethyl cellulose (EC). The immobilized Schiff bases SB-I (pKa = 4.25 in PVC) and SB-II (pKa = 10.68 in PVC) exhibited absorption and emission based optical response to proton in the pH range of 2.0-7.0 and 8.0-12.0, respectively. Immobilization of the dye effectively enhanced the fluorescence of these materials compared to solution. Responses of the sensor slides were fully reversible within the dynamic working range and the response times were less than 1 min. Relative signal changes of 63% and 95% have been achieved for sensor dyes of SB-I and SB-II in the PVC matrix, respectively. The cross-sensitivity of the dyes to different metal cations was also investigated. Presence of metal cations in test medium did not restrict the proton sensing ability of the dyes. © 2006 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.dyepig.2006.08.014
dc.identifier.endpage141en_US
dc.identifier.issn0143-7208
dc.identifier.issn0143-7208en_US
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage133en_US
dc.identifier.urihttps://doi.org/10.1016/j.dyepig.2006.08.014
dc.identifier.urihttps://hdl.handle.net/11454/21262
dc.identifier.volume76en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofDyes and Pigmentsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFiber optic pH sensoren_US
dc.subjectFluorescent pH indicatoren_US
dc.subjectSchiff baseen_US
dc.titleEmission based fiber optic pH sensing with Schiff bases bearing dimethylamino groupsen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

Scopus İndeksli Yayınlar Koleksiyonu