213846.fig.007a
(a) Dye-amine reaction
213846.fig.007b
(b) Dye-DPI-amine reaction
Figure 7: Schematic representation of the reaction mechanism for three-component photoinitiator systems containing FL or EYss, MDEA, and DPI. (a) photoreduction of the FL or EYss dye by MDEA and (b) photooxidation of the FL or EYss dye by DPI.