Research progress of cholesteric liquid crystals with broadband reflection characteristics in application of intelligent optical modulation materials

Zhang Lan-Ying^{1, 3}, Gao Yan-Zi¹, Song Ping¹, Wu Xiao-Juan², Yuan Xiao¹, He Bao-Feng¹, Chen Xing-Wu², Hu Wang², Guo Ren-Wei², Ding Hang-Jun², Xiao Jiu-Mei², Yang Huai^{1, 2, 3, †,}

(a) Chemical structure of the chiral compound and the light isomerization process of the chiral group, (b) the helical twisting power of the chiral compound as a function of irradiation time, and (c) the circularly polarized transmission spectrum of the resulting film.^[50]