LIQUID CRYSTAL FILM, METHOD FOR PREPARING THE FILM, TEMPERATURE-RESPONSIVE DEVICE COMPRISING THE FILM, AND CIRCULAR POLARIZER MADE THEREFROM

摘要

The present invention relates to a composite material, a liquid crystal film, a method for preparing the film, a temperature-responsive device comprising the film, and a circular polarizer made therefrom. The liquid crystal film comprises the composite material of the present invention, wherein the composite material comprises a polymer network of a cholesteric liquid crystal material, and a chiral material capable of hydrogen-bond-assisted self-assembly, and wherein the chiral material is dispersed in and restrained by the polymer network. The obtained liquid crystal film can exhibit a high reflectivity and a high transmittance as well as a broad band reflection. And, the liquid crystal film is applicable for an industrial development because it can be produced with a simple process and at a lower cost, and requires a lower UV luminous intensity.

主权项

1. A liquid crystal film comprising a composite material formed upon UV irradiation of a polymerizable composition comprising a photoinitiator, a cholesteric LC material, and a HBASA chiral material, wherein the cholesteric LC material comprises a polymerizable liquid crystal monomer.