The present invention provides a liquid crystal alignment film that exhibits highly efficient alignment control performance and that has a wide range with respect to the optimal polarized ultraviolet irradiation amount thereof. The problem addressed by the present invention is solved by an optically active composition characterized in that: said optically active composition comprises the (A) component and the (B) component indicated below; the (A) component comprises a photoreactive group; and the (A) component and the (B) component form a liquid crystalline supermolecule via a hydrogen bond. The (A) component is a polymer that has a side chain comprising a carboxylic acid group structure. The (B) component is at least one compound selected from the aromatic compounds represented by formula (1) (wherein the symbols in the formula are as defined in the description).
LIQUID CRYSTAL ALIGNMENT AGENT USING PHOTOREACTIVE HYDROGEN-BONDING POLYMER LIQUID CRYSTAL, AND LIQUID CRYSTAL ALIGNMENT FILM