Abstract Novel photoinitiators (α-DKs) bearing α-dicarbonyl groups as initiating group and aromatic groups as chromophore group were synthesized and developed as visible light type I photoinitiators with high performance for radical photopolymerization of acrylate. α-DKs exhibit good absorption at 405 nm and higher initiation efficiency compared with commercial initiator camphorquinone (CQ) under LED sources. Meanwhile, α-DKs were found to efficiently photosensitize bis (4-methylphenyl) hexafluorophosphate (ION) and initiate both free radical polymerization and cationic polymerization.

中文翻译：

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咔唑基α-二酮作为新型光引发剂用于 LED 下的光聚合

摘要 合成并开发了具有α-二羰基作为引发基团和芳香基团作为发色团的新型光引发剂(α-DKs)，作为丙烯酸酯自由基光聚合的高性能可见光I型光引发剂。与 LED 光源下的商业引发剂樟脑醌 (CQ) 相比，α-DK 在 405 nm 处表现出良好的吸收和更高的引发效率。同时，发现 α-DK 能有效地使双（4-甲基苯基）六氟磷酸酯 (ION) 光敏化并引发自由基聚合和阳离子聚合。