Synthesis and Structure-Activity Relationship of <i>N</i>-Substituted Carbazole Oxime Ester Photoinitiators

Recent advances on carbazole-based oxime esters as photoinitiators of polymerization

“…Following this work, the same authors investigated another family of carbazole where the oxime function was connected to carbazole by mean of the nitrogen atom (See Figure 42). [279] Figure 42. Chemical structures of Ph-N-Cz-1-Ph-N-Cz-4.…”

Recent advances on phenothiazine-based oxime esters as visible light photoinitiators of polymerization

“…[53] In order to get a sufficient absorption in the visible range, chromophores different from those used in benchmark photoinitiators have to be used or structurally modified in order to improve their absorptions in the visible range. Thus, anthraquinone, [62] coumarins, [55,[63][64][65][66] carbazole, [67][68][69][70][71][72][73][74][75] carbazole-fused coumarins, [14,76,77] pyrene, [78] anthracene, [78] naphthalene, [79] triphenylamine, [80][81][82][83][84] thioxanthone, [85] phenylthioether thiophene, [86,87] bis-chalcones, [88] fluorophenyl derivatives, [89] stilbene derivatives, [90] thiophene derivatives, [91] naphthoquinones, [92] naphthalimides [93] and chalcones [94] have notably been examined as chromophores for the design of oxime esters. Among potential structures, phenothiazine has recently been used for the design of Type II and Type I photoinitiators.…”