Photoredox pairs consisting of dyes based on a 12H-quinoxalino[2,3-b][1,4]benzothiazine skeleton and iodonium salt are found to be effective initiation systems for cationic polymerization of epoxide monomers and tetrahydrofuran using VIS light. The efficiency of these initiator systems is discussed on the basis of the free energy change for electron transfer from benzothiazine dyes to the iodonium compounds. Three products, phenyl derivatives of dye 1 were isolated after photolysis of 1/onium salt system. These compounds were characterising by chemical ionization mass spectra. The reactions created the phenylated analogues of dye 1 and protons were proposed.

发现由基于12H-喹喔啉[2,3-b] [1,4]苯并噻嗪骨架和碘鎓盐的染料组成的光氧化还原对是使用VIS光进行环氧化物单体和四氢呋喃阳离子聚合的有效引发体系。这些引发剂体系的效率是根据电子自由迁移从苯并噻嗪染料转移到碘鎓化合物的基础上讨论的。1 /鎓盐体系光解后，分离出三种产物染料1的苯基衍生物。这些化合物通过化学电离质谱表征。该反应产生了染料1的苯基化类似物，并提出了质子。