Lalevée Jacques, Tehfe Mohamad-Ali, Zein-Fakih Abbas, Ball Bruno, Telitel Sofia, Morlet-Savary Fabrice, Graff Bernadette, Fouassier Jean Pierre
Institut de Science des Matériaux de Mulhouse IS2M, LRC CNRS 7228, ENSCMu-UHA, 15 rue Jean Starcky, 68057 Mulhouse Cedex, France.
ENSCMu-UHA, 3 rue Alfred Werner, 68093 Mulhouse Cedex, France.
ACS Macro Lett. 2012 Jul 17;1(7):802-806. doi: 10.1021/mz3002325. Epub 2012 Jun 11.
-Vinylcarbazole is proposed as an additive for epoxy ring-opening polymerization ROP upon visible light exposure. This compound can convert hardly oxidizable radicals to carbon centered radicals by an addition process onto the -vinylcarbazole double bond. The generated radicals can be further easily oxidized by an iodonium salt thereby leading to efficient initiating cations for the ROP of epoxides. Different visible light photoinitiating systems have been investigated: Type I photoinitiators (derived from phosphine oxides) and dye/iodonium salt couples. The underlying chemical mechanisms are investigated by electron spin resonance (ESR) experiments.
有人提出将乙烯基咔唑作为环氧树脂开环聚合（ROP）在可见光照射下的添加剂。该化合物可通过加成到乙烯基咔唑双键上的过程将难氧化的自由基转化为碳中心自由基。所产生的自由基可被碘鎓盐进一步轻易氧化，从而产生用于环氧化物ROP的有效引发阳离子。已研究了不同的可见光光引发体系：I型光引发剂（衍生自氧化膦）和染料/碘鎓盐对。通过电子自旋共振（ESR）实验研究了潜在的化学机理。
