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二烷基(4-羟基苯基)硫鎓盐作为一类新型的光引发剂由于其合成方法简便以及具较宽的光谱范围(可延伸至300nm)。因而近年来颇受重视。由于该引发剂在光照激发后生成了共振一稳定的内鎓盐(Ylide)结构和质子酸。如下式:
As a new class of photoinitiators, dialkyl (4-hydroxyphenyl) sulfonium salts are simple to synthesize and have a wide spectral range (extendable to 300 nm). In recent years, it has gained much attention. Since the initiator generates a resonance-stable Ylide structure and protonic acid upon photo-excitation. As follows: