Anthracene electron-transfer photosensitizers for onium salt induced cationic photopolymerizations

摘要: This article describes the synthesis of several derivatives anthracene (AN) and their evaluation as electron-transfer photosensitizers for onium salt induced cationic photopolymerizations. The synthetic methods that were employed involved straightforward high yield routes to these derivatives. Using Fourier transform real-time infrared spectroscopy (FT-RTIR), photoinduced polymerizations model epoxide vinyl ether monomers examined in presence absence photosensitizers. It was observed bearing electron-donating substituents markedly accelerated rates all UV irradiation photopolymerizations which diaryliodonium, triarylsulfonium dialkylphenacylsulfonium photoinitiators used. In each case, greatest acceleration rate occurred when 9,10-dialkoxyanthracenes