Red-light-induced cationic photopolymerization: perylene derivatives as efficient photoinitiators.
Nine different perylene derivatives are prepared and their ability to initiate, when combined with an iodonium salt (and optionally N-vinylcarbazole), a ring-opening cationic photopolymerization of epoxides under very soft halogen lamp irradiation is investigated. One of them is particularly efficient under a red laser diode exposure at 635 nm and belongs now to the very few systems available at this wavelength. The photochemical mechanisms are studied by steady-state photolysis, electron spin resonance spin trapping, fluorescence, cyclic voltammetry, and laser flash photolysis techniques.
Institut de Science des Matériaux de Mulhouse IS2M, CNRS, UMR 7361, UHA, 15, rue Jean Starcky, Mulhouse Cedex, 68057, France.
Pu
P
Xiao
Frédéric
F
Dumur
Bernadette
B
Graff
Didier
D
Gigmes
Jean Pierre
JP
Fouassier
Jacques
J
Lalevée
D002412:Cations / Q000737:chemistry; D004578:Electron Spin Resonance Spectroscopy; D004852:Epoxy Compounds; D006219:Halogens / Q000737:chemistry; D008027:Light; D010569:Perylene / Q000737:chemistry*; D010782:Photolysis; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*
D002412:Cations; D004852:Epoxy Compounds; D006219:Halogens; D011108:Polymers; D010569:Perylene
laser diode; perylene derivatives; photoinitiators; red light; ring-opening polymerization