Synthesis and photochromic properties of 4,5-bisaryl-3(2H)-pyridazinones

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dc.contributor.authorOrhan, Ersin
dc.contributor.authorGündoğdu, Leyla
dc.contributor.authorKöse, Mahmut
dc.contributor.authorYokoyama, Yasushi
dc.date.accessioned2020-04-30T23:32:26Z
dc.date.available2020-04-30T23:32:26Z
dc.date.issued2016
dc.departmentDÜ, Fen-Edebiyat Fakültesi, Kimya Bölümüen_US
dc.descriptionYOKOYAMA, Yasushi/0000-0002-8654-1320; orhan, ersin/0000-0002-5461-1005en_US
dc.descriptionWOS: 000366065800021en_US
dc.description.abstractSix novel photochromic bisarylpyridazinones containing 2,5-dimethylthiophene or 5-methy1-2-phenylthiazole unit were synthesized, and their photochromic and fluorescence properties were investigated. The bisarylpyridazinones underwent reversible color change upon irradiation with UV or visible light. The effect of solvents on the absorption spectra of the bisarylpyridazinones was investigated. The closed-ring forms of bisarylpyridazinones displayed negative solvatochromism which was attributed to the high dipolar characters of the molecule. The open-ring forms of bisarylpyridazinones showed fluorescence at 400-480 nm upon excitation at 302 nm, and the intensities of emission bands gradually decreased during the ring-closing photoreactions. Among the synthesized bisarylpyridazinones, 4,5-bis(5-methyl-2-phenylthiazol-4-yl)-2-methyl(or 2-phenyl) pyridazin-3(2H)-ones (50 and 60) displayed rather large absorption and emission spectral change, higher quantum efficiency during the photoreaction compared to others. A high conversion ratio (94%) to the closed form was observed for 50. (C) 2015 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipTUBITAK (Scientific and Technical Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [113Z547]en_US
dc.description.sponsorshipThe authors are grateful to TUBITAK (Scientific and Technical Research Council of Turkey) for the financial support of this work (Grant No: 113Z547).en_US
dc.identifier.doi10.1016/j.jphotochem.2015.08.025en_US
dc.identifier.endpage170en_US
dc.identifier.issn1010-6030
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage164en_US
dc.identifier.urihttps://doi.org/10.1016/j.jphotochem.2015.08.025
dc.identifier.urihttps://hdl.handle.net/20.500.12684/4720
dc.identifier.volume314en_US
dc.identifier.wosWOS:000366065800021en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal Of Photochemistry And Photobiology A-Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPhotochromismen_US
dc.subjectDiaryletheneen_US
dc.subjectPyridazinoneen_US
dc.subjectBisarylpyridazinoneen_US
dc.subjectSolvent effecten_US
dc.subjectFluorescence switchen_US
dc.titleSynthesis and photochromic properties of 4,5-bisaryl-3(2H)-pyridazinonesen_US
dc.typeArticleen_US

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