An annelated thioxanthone as a new Type II initiator
Yazarlar (5)
Demet Karaca Balta
Yıldız Teknik Üniversitesi, Türkiye
Prof. Dr. İsmail Gökhan TEMEL
Yalova Üniversitesi, Türkiye
Nergis Arsu
Yıldız Teknik Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Journal of Photochemistry and Photobiology A: Chemistry | ||
| Dergi ISSN | 1010-6030 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 09-2008 |
| Cilt / Sayı / Sayfa | 199 / 2 / 316–321 | DOI | 10.1016/j.jphotochem.2008.06.008 |
| Makale Linki | http://linkinghub.elsevier.com/retrieve/pii/S1010603008002876 | ||
| Özet |
| 5-Thia-naphthacen-12-one (TX-Np) was synthesized as a potential photoinitiator for radical polymerization. Polymerization studies revealed that TX-Np acts as a photoinitiator for radical polymerization of acrylic type monomers in the presence of N-methyldiethanolamine (MDEA). The phosphorescence spectrum measured at 77K in ethanol showed an emission band at λmax=505nm corresponding to the approximate triplet energy of ca. 237kJ/mol. The phosphorescence lifetime was found to be 197ms corresponding to a π–π* nature of the lowest triplet state. The quantum yield for fluorescence emission (ϕf) in benzene was found to be 0.045. Spectroscopic and polymerization studies revealed that photoinitiation occurs through the α-aminoalkyl radical, similar to thioxanthone-based photoinitiators. Since MDEA is required for TX-Np to act as an initiator for acrylate polymerization, it is suggested that the TX-Np reacts … |
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BM Sürdürülebilir Kalkınma Amaçları
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| Google Scholar | 66 |