Green-Light-Induced Cationic Ring Opening Polymerization Reactions: Perylene-3,4:9,10- bis (Dicarboximide) as Effi cient Photosensitizers - Archive ouverte HAL
Article Dans Une Revue Macromolecular Chemistry and Physics Année : 2013

Green-Light-Induced Cationic Ring Opening Polymerization Reactions: Perylene-3,4:9,10- bis (Dicarboximide) as Effi cient Photosensitizers

Résumé

New perylene-3,4:9,10-bis(dicarboximide) (PBI) photoinitiators/photosensitizers derived from perylene-3,4:9,10-tetracarboxylic dianhydride are synthesized and investigated for the formation of free radicals under air and under very soft irradiation (i.e., halogen lamp) or laser diode exposure at 532 nm. Such a PBI in combination with a diphenyl iodonium salt and N -vinylcarbazole or a silane very effi ciently promotes the ring-opening polymerization of epoxides and can also generate acrylate/epoxide interpenetrated polymer networks. It partly behaves as a metal-free organic photocatalyst operating in an oxidative catalytic cycle. The different chemical intermediates are characterized by ESR and laser fl ash photolysis experiments. The mechanisms involved in the initiation step are discussed.

Domaines

Matériaux

Dates et versions

hal-01020188 , version 1 (07-07-2014)

Identifiants

Citer

Mohamad Ali Tehfe, Frédéric Dumur, Bernadette Graff, Didier Gigmes, Jean Pierre Fouassier, et al.. Green-Light-Induced Cationic Ring Opening Polymerization Reactions: Perylene-3,4:9,10- bis (Dicarboximide) as Effi cient Photosensitizers. Macromolecular Chemistry and Physics, 2013, 214, pp.1052−1060. ⟨10.1002/macp.201200728⟩. ⟨hal-01020188⟩
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