Synthesis of one-component type II dithioxanthone-disulfide photoinitiator and investigation of photophysical and photochemical properties

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dc.authorid0000-0001-8061-5280
dc.contributor.authorKoyuncu, Umut
dc.contributor.authorMetin, Eyüp
dc.contributor.authorÖcal, Nüket
dc.contributor.authorArsu, Nergis
dc.date.accessioned2023-05-16T11:20:44Z
dc.date.available2023-05-16T11:20:44Z
dc.date.issued2021
dc.departmentTAÜ, Fen Fakültesi, Malzeme Bilimi ve Teknolojileri Bölümüen_US
dc.description.abstractHerein, we report the successful synthesis of dithioxanthone-disulfide [TX-S-](2) as a new one-component type II photoinitiator. Photophysical properties of [TX-S-](2) in terms of fluorescence and phosphorescence properties were investigated and low fluorescence quantum yield was observed, which indicates an efficient intersystem crossing (ISC) that leads to the generation of triplet states. Efficiently produced initiating thiyl radicals from the triplet states lead to polymerization of methyl methacrylate with [TX-S-](2) in air atmosphere. To elucidate the initiating mechanism, a disulfide exchange reaction was performed in the presence of diphenyl disulfide [Ph-S-](2), and the obtained results from HQ-TOF confirmed that [TX-S-](2) disulfide bond cleavage occurs upon irradiation with light. Initiating mechanism of [TX-S-](2) revealed the potential usage of this compound as a self-healing agent due to the efficient cleavage of disulfide bonds. In conjunction with the experimental studies series of Density Functional Theory calculations were performed and various photophysical and photochemical properties, including HOMO and LUMO, were computationally calculated and visualized.
dc.identifier.citationKoyuncu, U., Metin, E., Öcal, N., & Arsu, N. (2021). Synthesis of one-component type II dithioxanthone-disulfide photoinitiator and investigation of photophysical and photochemical properties. European Polymer Journal, 153, 110510.
dc.identifier.doi10.1016/j.eurpolymj.2021.110510
dc.identifier.scopus2-s2.0-85106275757
dc.identifier.urihttps://hdl.handle.net/20.500.12846/722
dc.identifier.volume153en_US
dc.identifier.wosWOS:000659149700018
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorMetin, Eyüp
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofEuropean Polymer Journal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSelf-healingen_US
dc.subjectDisulfideen_US
dc.subjectPhotochemicalen_US
dc.titleSynthesis of one-component type II dithioxanthone-disulfide photoinitiator and investigation of photophysical and photochemical properties
dc.typeArticle

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