Highly conjugated isoindigo and quinoxaline dyes as sunlight photosensitizers for onium salt-photoinitiated cationic polymerization of epoxy resins

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dc.authoridYagci, Yusuf/0000-0001-6244-6786
dc.authoridYesil, Tamer/0000-0003-4640-3158
dc.authorscopusid57398473100
dc.authorscopusid57397150400
dc.authorscopusid57216489633
dc.authorscopusid12242899200
dc.authorscopusid7801633542
dc.authorscopusid56276130500
dc.authorscopusid8379291000
dc.authorwosidYagci, Yusuf/AAT-6283-2021
dc.authorwosidKoyuncu, Sermet/AAN-2681-2021
dc.contributor.authorErcan, Bahar T.
dc.contributor.authorGultekin, Sirin S.
dc.contributor.authorYesil, Tamer
dc.contributor.authorDincalp, Haluk
dc.contributor.authorKoyuncu, Sermet
dc.contributor.authorYagci, Yusuf
dc.contributor.authorZafer, Ceylan
dc.date.accessioned2023-01-12T19:49:55Z
dc.date.available2023-01-12T19:49:55Z
dc.date.issued2022
dc.departmentN/A/Departmenten_US
dc.description.abstractIn this study, photoinitiated cationic polymerization of epoxy resins by photoinduced electron transfer reactions using four new chromophoric dyes, namely (3E)-1,1 '-bis(2-ethylhexyl)-6,6 '-dipyren-1-yl-3,3 '-biindole-2,2 '(1H,1 ' H)-dione (ISOIV), (3 ' E)-1,1 '''-diethyl-1 ',1 ''-bis(2-ethylhexyl)-1H,1 ''' H-5,6 ':3 ',3 '':6 '',5 '''-quaterindole-2 ',2 ''(1 ' H,1 '' H)-dione (ISOV), (3E)-6,6 '-bis(9-ethyl-9H-carbazole-3-yl)-1-[(2R)-2-ethylhexyl]-1 '-[(2S)-2-ethylhexyl]-3,3 '-biindole-2,2 '(1H,1 ' H)-dione (ISOVIII) and 3,3 '-(6-bromokinoksalin-2,3-diyl)bis(9-ethyl-9H-carbazole) (TPDC6), and diphenyliodonium hexafluorophosphate (Ph2I+PF6-; DPI) under sunlight is reported. Upon irradiation, photoexcited dye forms an exciplex with DPI. Electron transfer reactions within the exciplex result in the formation of ionic species capable of initiating ring-opening polymerization of an epoxy resin. It is shown that among the investigated dyes, ISOVIII and TPDC6 exhibited higher initiation efficiency in accordance with their stronger electron-donating nature due to the presence of carbazole groups. (c) 2021 Society of Industrial Chemistry.en_US
dc.identifier.doi10.1002/pi.6357
dc.identifier.endpage873en_US
dc.identifier.issn0959-8103
dc.identifier.issn1097-0126
dc.identifier.issn0959-8103en_US
dc.identifier.issn1097-0126en_US
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-85122298796en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage867en_US
dc.identifier.urihttps://doi.org/10.1002/pi.6357
dc.identifier.urihttps://hdl.handle.net/11454/75955
dc.identifier.volume71en_US
dc.identifier.wosWOS:000739437800001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofPolymer Internationalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcationic photopolymerizationen_US
dc.subjectepoxideen_US
dc.subjectdyeen_US
dc.subjectiodonium salten_US
dc.subjectphotoinduced electron transferen_US
dc.subjectCharge-Transfer Complexesen_US
dc.subjectInitiatorsen_US
dc.subjectCarbazoleen_US
dc.subjectSystemsen_US
dc.titleHighly conjugated isoindigo and quinoxaline dyes as sunlight photosensitizers for onium salt-photoinitiated cationic polymerization of epoxy resinsen_US
dc.typeArticleen_US

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