Fig. 1. Chemical structures of the utilized materials

Fig. 2. Photolysis reaction equation of the photogenerated base catalyst NPPOC-TMG

Fig. 3. （a）Absorption spectra of the dyes；（b）Disperse Orange before and after UV irradiation；（c）Solvent Green 28 before and after UV irradiation；（d）Solvent Blue 104 before and after UV irradiation.

Fig. 4. Effects of Disperse Orange concentration on PDLC microstructure（SEM）

Fig. 5. Effects of Solvent Green 28 concentration on PDLC microstructure（SEM）

Fig. 6. Effects of Solvent Blue 104 concentration on PDLC microstructure（SEM）

Fig. 7. Effect of dye concentration on the electro-optical properties of PDLC.（a~c）Disperse Orange system：（a）V-T curve，（b）driving voltage，（c）T_on and T_off curves；（d~f）Solvent Green 28 system：（d）V-T curve，（e）driving voltage，（f）T_on and T_off curves；（g~i）Solvent Blue 104 system：（g）V-T curve，（h）driving voltage，（i）T_on and T_off curves.

Fig. 8. Dye concentration effects on PDLC performance.（a）Contrast ratio versus concentration；（b）Response time of Disperse Orange；（c）Response time of Solvent Green 28；（d）Response time of Solvent Blue 104.

Fig. 9. Peel strength of PDLC versus dye concentration.（a）Disperse Orange；（b）Solvent Green 28；（c）Solvent Blue 104.

Fig. 10. Photographs of dyes at their optimal concentrations（mass fraction）：B3 Disperse Orange（0.5%），C1 Solvent Green 28（0.125%），and D1 Solvent Blue 104（0.125%）.