Fluorescence emission studies on 1-phenyl-4-aroyl (and acyl)-1H-1,2,3-triazoles

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dc.contributor.authorIcli, S
dc.contributor.authorAstley, AS
dc.contributor.authorTimur, C
dc.contributor.authorAnac, O
dc.contributor.authorSezer, O
dc.contributor.authorDabak, K
dc.date.accessioned2019-10-27T11:50:39Z
dc.date.available2019-10-27T11:50:39Z
dc.date.issued1999
dc.departmentEge Üniversitesien_US
dc.description.abstractFluorescence emission from 378 nm excitation yielded fluorescence quantum yields Q(f), radiative lifetimes tau(0), and fluorescence rate constants k(f), in the range of 0.0004-0.0069, 17-132 ns and (0.9-18.2) x 10(6) s(-1), respectively, for seven 4-aroyl(acyl) derivatives of 1-phenyl-1,2,3-triazoles in chloroform solutions. The fluorescence lifetimes, tau(f), are estimated to be 0.01-0.45 ns. Some substitution effects are detected in the fluorescence emission parameters. The strong pi-electron donor, 5,10-dihydrocarbazolo[3,4-c]carbazole,is found ito be quenched by triazoles at quenching rates of 7.7 x 10(10)-2.8 x 10(12) M-1 s(-1). The high rates of fluorescence quenching, k(q), are attributed to a ground state complexation between 1,2,3-triazoles and the strong pi-electron donor carbazolocarbazole. 1,2,3-Triazoles have shown intense solvatochromic absorbance shifts in n-hexane, chloroform and methanol. Absorbance shifts reaching 44 nm were observed from polar to protic solvents. (C) 1999 Elsevier Science B.V. All rights reserved.en_US
dc.identifier.doi10.1016/S0022-2313(99)00022-8
dc.identifier.endpage48en_US
dc.identifier.issn0022-2313
dc.identifier.issn0022-2313en_US
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage41en_US
dc.identifier.urihttps://doi.org/10.1016/S0022-2313(99)00022-8
dc.identifier.urihttps://hdl.handle.net/11454/34333
dc.identifier.volume82en_US
dc.identifier.wosWOS:000080906800006en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofJournal of Luminescenceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject1,2,3-triazolesen_US
dc.subjectfluorescence quantum yieldsen_US
dc.subjectfluorescence lifetimesen_US
dc.subjectfluorescence quenching ratesen_US
dc.subjectcarbazolocarbazoleen_US
dc.subjectsolvatochromic shiftsen_US
dc.titleFluorescence emission studies on 1-phenyl-4-aroyl (and acyl)-1H-1,2,3-triazolesen_US
dc.typeArticleen_US

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