Study of the fluorescence-quenching of Mg-TNP by anionic anthraquinones

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dc.authoridIon, Rodica Mariana/0000-0002-9842-3321
dc.contributor.authorGunaydin, K
dc.contributor.authorIon, RM
dc.contributor.authorScarlat, F
dc.contributor.authorScarlat, F
dc.contributor.authorNiculescu, VIR
dc.contributor.authorMacau, C
dc.date.accessioned2024-09-18T20:54:24Z
dc.date.available2024-09-18T20:54:24Z
dc.date.issued2004
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThe fluorescence quenching of magnesium 5,10,15,20-tetra-p-naphtyl-porphyrin (Mg-TNP) has been studied in benzene using 9,10-anthraquinone-2-sulfonic acid sodium salt (An 1), 9,10 -anthraquinone-2,6-disulfonic acid sodium salt monohydrate (An 2), 9,10-anthraquinone-1,5-disulfonic disodium salt monohydrate (An 3) as quenchers. The fluorescence quenching rate constants are deduced from the Stern-Volmer curves and it is postulated that the quenching occurs via the formation of a charge transfer complex formation. For all these cases, R(o)values are in the 1-10 Angstrom range, which correspond to one singlet quenching processes by diffusion controlled energy transfer. Electron-exchange and/or electron transfer processes are expected to proceed also at these distances. The quenching mechanism is concerted one between static quenching with energy transfer (due to long-range dipole-dipole interaction between excited anthraquinone molecules (donor) and the ground state acceptor molecule Mg-TNP) and electron transfer which should occur from singlet excited state of Mg-TNP to donor anthraquinone molecule, leading to formation of stable radical anion and cations.en_US
dc.identifier.endpage296en_US
dc.identifier.issn1454-4164
dc.identifier.issn1841-7132
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-1842631711en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage289en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12483/11784
dc.identifier.volume6en_US
dc.identifier.wosWOS:000220389800037en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherNatl Inst Optoelectronicsen_US
dc.relation.ispartofJournal of Optoelectronics and Advanced Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectporphyrinsen_US
dc.subjectfluorescenceen_US
dc.subjectquenchingen_US
dc.subjectanthaquinonesen_US
dc.titleStudy of the fluorescence-quenching of Mg-TNP by anionic anthraquinonesen_US
dc.typeArticleen_US

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