Silyloxy-substituted anthraquinones were evaluated as Type I photoinitiators for the visible light-induced radical polymerization of an acrylate monomer. Structure–activity correlations were established, and a mechanistic explanation of the observed activity trend was proposed. Isopropyl radicals were generated from compounds with a silyloxy group at position 1 and acted as the initiating species. The 1-substituted silyloxy anthraquinones synthesized herein are among the few Type I photoinitiators that have an anthraquinone skeleton and are sensitive to visible light (405 nm).
- Eunseok Lee
- Takuya Sekizawa
- Hiroaki Gotoh
