An annelated thioxanthone as a new Type II initiator

Balta, Demet; CETINER, Nihal; TEMEL, Gokhan; TURGUT, Zühal; ARSU, Nergis

doi:10.1016/j.jphotochem.2008.06.008

An annelated thioxanthone as a new Type II initiator

Balta D., CETINER N., TEMEL G., TURGUT Z., ARSU N.

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, vol.199, pp.316-321, 2008 (SCI-Expanded, Scopus)

Publication Type: Article / Article
Volume: 199
Publication Date: 2008
Doi Number: 10.1016/j.jphotochem.2008.06.008
Journal Name: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.316-321
Keywords: photopolymerization, thioxanthone, Type II initiator, FREE-RADICAL POLYMERIZATION, QUANTUM YIELD, PHOTOINITIATOR, SYSTEMS, SPECTROSCOPY, DERIVATIVES, PHOTOPOLYMERIZATION, FLUORESCENCE, SOLVENT, ACID
Yıldız Technical University Affiliated: Yes

Abstract

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 77 K in ethanol showed an emission band at lambda (max) = 505 nm corresponding to the approximate triplet energy of ca. 237 kj/mol.