以色列和西德化学家已制备了依靠光和温度显示红、黄、蓝(三原色)的液晶聚合物[Angew.Chem.,Int.Ed.Engl.26,1178(1987)],这些材料是含有螺吡喃基的聚硅氧烷,将聚合物膜用可见光照射使它们呈现淡黄色。紫外光照射使淡黄的膜转变成深红色(假使照射是在-20℃下实行则呈蓝色)。 Israeli and West German chemists have prepared liquid crystal polymers that rely on light and temperature for displaying red, yellow, and blue (three primary colors) [Angew. Chem., Int. Ed. Engl. 26, 1178 (1987) Spiropyranyl polysiloxanes, which are exposed to visible light to render them light yellow in color. Ultraviolet light turns the pale yellow film into a dark red (blue if irradiated at -20 ° C).