Broadband reflection of polymer-stabilized chiral nematic liquid crystals induced by a chiral azobenzene compound

A chiral nematic liquid crystal–photopolymerizable monomer–chiral azobenzene compound composite was prepared and then polymerized under UV irradiation. The reflection wavelength of the composite can be extended to cover the 1000–2400 nm range and also be adjusted to the visible light region by controlling the concentration of chiral compounds.