| abstract |
The present invention provides a chiral compound which has a large helical twist power, a low melting point, and good compatibility with other liquid crystal compounds. Further, the present invention provides a liquid crystal composition comprising a chiral compound of the present invention and an achiral liquid crystal component, a liquid crystal phase having a low driving voltage, good storage stability, and optical isotropic properties. The liquid crystal composition contains at least one chiral compound represented by the formula (K1) or (K2) and at least one achiral liquid crystal component. In the formula (K1) and the formula (K2), Rk1 is, for example, an alkyl group having 1 to 5 carbon atoms, Rk2 is, for example, an alkyl group having 1 to 20 carbon atoms, and the ring Ak1 is, for example, 1,4-phenylene. For example, Xk1 is, for example, a single bond, Yk1 is, for example, -(CH2-)n-, n is an integer of 1 to 20, Zk1 is, for example, a single bond, mk1 is, for example, an integer of 2 to 4, and nk1 and nk2 are, for example, 0~ 2 integer) |