Thioxanthone-Diphenyl Anthracene: Visible Light Photoinitiator

Balta D., TEMEL G., Goksu G., OCAL N., ARSU N.

MACROMOLECULES, vol.45, no.1, pp.119-125, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1021/ma202168m
  • Journal Name: MACROMOLECULES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.119-125
  • Yıldız Technical University Affiliated: Yes


7,12-Diphenyl-14H-naphto[2,3-b]thioxanthen-14-one (TX-DPA) was synthesized and characterized as a potential visible light photoinitiator for radical polymerization. TX-DPA has an excellent absorption character in the visible region and the photophysical properties of TX-DPA were investigated by fluorescence and laser flash photolysis studies and the photopolymerization of methyl methacrylate in air atmosphere helped to understand the initiation mechanism of TX-DPA. Moreover, it is possible that the production of singlet oxygen from the quenching of (3)TX-DPA by molecular oxygen resulted in the reaction of singlet oxygen with TX-DPA to form an endopercaide: decomposition of endoperoxide leads to initiating radicals.