Synthesis and characterization of a double photochromic initiator for cationic polymerization

Recent Developments of Versatile Photoinitiating Systems for Cationic Ring Opening Polymerization Operating at Any Wavelengths and under Low Light Intensity Sources

“…Original and different cationic skeletons include dialkyl and cycloalkyl sulfonium salts, phenylethynyl sulfonium salts, acylsulfonium salts, dialkyl aryl sulfonium salts, thianthrenium salts or onium salts centered on a N (e.g., quinolinium, ammonium, anilinium salts, P (pyridinium, phosphonium salts), O (pyrilium salts) or a S atom (thiopyrilium, thiazolinium salts). Interesting results can be found in e.g., [ 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 ].…”

Visible light sensitive photoinitiating systems: Recent progress in cationic and radical photopolymerization reactions under soft conditions

“…Several attempts have also been made for the cationic PISs under long wavelength UV lights (>300 nm) [73][74][75][76][77][78][79][80][81][82][83] or even visible lights [84][85][86][87][88][89][90][91][92][93][94]. However, photopolymerization reactions under low intensity visible light irradiation conditions were rather rare and challenging before 2011.…”

Cationic Photoinitiators for Near UV and Visible LEDs: A Particular Insight into One‐Component Systems

“…various substituted compounds, phenacylsulfonium salts, (9‐oxo‐9H‐fluoren‐2‐yl)‐phenyl‐iodonium salt, pyridinium salts, phenylethynyl sulfonium salts, iodonium salts with a suitable counteranion, thioxanthenium salts, arylthianthrenium salts, iodonium salts bearing a chromophoric moiety (e.g. fluorenone or coumarin, novel ferrocenium salts and so on . Very recently, a new phenacyl ethyl carbazolium hexafluoroantimonate photoinitiator (noted PECH) was reported .…”