Chemiluminescence Induced Cationic Photopolymerization Using Sulfonium Salt

ACS Macro Lett. 2020 Apr 21;9(4):471-475. doi: 10.1021/acsmacrolett.0c00003. Epub 2020 Mar 18.


A visible light cationic photoinitiating system under chemiluminescence irradiation using sulfonium salt is reported. The visible light emitted from the chemiluminescence reactions, absorbed by the sulfonium salt, essentially leads to the formation of protonic acids capable of initiating cationic polymerization of oxirane and vinyl monomers. The process is suitable for the formation of linear polymer chains as well as cross-linked functional networks with aggregation-induced emission property. Notably, high "post polymerization" efficiency in dark (∼20%) was observed, which can compensate the limited chemiluminescence fluorescence efficiency and favors to increase the conversion.