A selective reflecting film with a temperature-dependent pitch length

A (polymer network/liquid crystal/chiral dopants) composite exhibiting a temperature-sensing switch of infrared spectrum has been developed. Because of the different change of the chiral dopant in the helical twisting power and the anchoring effect of the polymer network, the polymer stabilized liquid crystal (PSLC) films, of which the bandwidth of the selective reflection spectra increased with changing temperature, were obtained.