| abstract |
The present invention seeks a liquid crystal medium which has stability against heat and light, a wide range of liquid crystal phase temperatures, a low driving voltage, a small dielectric constant, and exhibits an optically isotropic liquid crystal phase. Further, the present invention has an optical element or the like which can be used over a wide temperature range, has a short response time, a large contrast ratio, a low driving voltage, and a small dielectric constant. The present invention provides a liquid crystal composition containing at least one achiral component (T) and a chiral agent of the compound (1) represented by the formula (1), and exhibiting an optically isotropic liquid crystal phase. □ (wherein, R1 is an alkyl group having 1 to 12 carbon atoms; A1 and A2 are each independently 1,4-phenylene; Z1 and Z2 are each independently a single bond; Z3 is -COO-, or -CF2 O-; L11 is hydrogen, fluorine or chlorine; Y1 is fluorine, chlorine, -CF3, or -OCF3; n1 and n2 are independently 0 or 1, n1+n2≧1) |