Comparison of the Optoelectronic Performance of Neutral and Cationic Forms of Riboflavin

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dc.contributor.authorSaltan, Gozde Murat
dc.contributor.authorKiymaz, Deniz Aykut
dc.contributor.authorZafer, Ceylan
dc.contributor.authorDincalp, Haluk
dc.date.accessioned2019-10-27T10:48:28Z
dc.date.available2019-10-27T10:48:28Z
dc.date.issued2017
dc.departmentEge Üniversitesien_US
dc.description.abstractThe riboflavin dye 2,3,4,5-tetra-O-acetyl-1-[3-(6-bromohexyl)-7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[g]pteridin-10(2H)-yl]-1-deoxypentitol and its pyridinium salt were synthesized, and studied by absorption and fluorescence spectroscopy in solutions and on thin film states. The first absorption band of riboflavin-pyridinium salt derivative is red-shifted by 10 nm compared to neutral one on film. Cationic riboflavin derivative shows significant wavelength changes on its fluorescence emission spectrum in the excited state depending on the solvent polarity and the electronic environment. The fluorescence quantum yields of cationic riboflavin gave much higher values as compared to that of its neutral form. The fluorescence lifetimes were found to be in the range of 5.5-6.6 ns with mono - exponential behavior. These dyes possess low-lying HOMO energy levels which are suitable to be able to inject holes to donor polymers so that they can be used as acceptor component in the active layer of bulk heterojunction solar cells (BHJ-SCs). Photovoltaic responses are reported for P3HT:riboflavin active layer wherein the synthesized dyes are used as acceptor component. Also, neutral riboflavin shows greater electron mobility value of 1.3 x 10(-3) cm(2)/Va (TM) s compared to its cationic derivative.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [113Z250]en_US
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) with the project number of 113Z250. We thank to Ege University for the support of the use of Gaussian 09 W programme for DFT calculations.en_US
dc.identifier.doi10.1007/s10895-017-2135-xen_US
dc.identifier.endpage1984en_US
dc.identifier.issn1053-0509
dc.identifier.issn1573-4994
dc.identifier.issue6en_US
dc.identifier.pmid28687984en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1975en_US
dc.identifier.urihttps://doi.org/10.1007/s10895-017-2135-x
dc.identifier.urihttps://hdl.handle.net/11454/31540
dc.identifier.volume27en_US
dc.identifier.wosWOS:000413690400006en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherSpringer/Plenum Publishersen_US
dc.relation.ispartofJournal of Fluorescenceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectOptoelectronic materialsen_US
dc.subjectRiboflavinen_US
dc.subjectFluorescenten_US
dc.subjectThin filmsen_US
dc.subjectPhotovoltaicen_US
dc.titleComparison of the Optoelectronic Performance of Neutral and Cationic Forms of Riboflavinen_US
dc.typeArticleen_US

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