| abstract |
(57) Abstract: A liquid crystal material having good chemical, photochemical and thermal stability and good stability to an electric field, and having low viscosity, short response time and low threshold potential is provided. thing. SOLUTION: General formula (I): (Wherein R is alkyl or alkenyl having up to 12 carbon atoms; rings A and B are each independently 1,4-phenylene, trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl; Z 1 is a single bond or —CH 2 CH 2 —; Z 2 is a single bond, -CH 2 CH 2 -, - OCH 2 -, - C≡C-, -COO- or -OOC-; m and n represent 0 or 1, but m + n≤1) and a liquid crystal mixture containing the same. |