| 摘要 |
The disclosure shows a liquid crystal composition that contains a compound having an effect of preventing photolysis of the liquid crystal composition and having high solubility in the liquid crystal composition, and that satisfies at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large positive or negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat, and a suitable elastic constant, etc. and so on.;The disclosure shows a liquid crystal composition that contains a compound having the following azolidine ring (Q-1) or azepane ring (Q-2), a liquid crystal display device and so on.; |
| 主权项 |
1. A liquid crystal composition, containing at least one compound (1) selected from the group consisting of compounds represented by formulae (1-1) to (1-4) and at least one compound selected from the group consisting of compounds represented by formulae (2) to (4), wherein in formulae (1-1) to (1-4), M is a tetravalent aliphatic hydrocarbon group having 1 to 20 carbons or a tetravalent aromatic hydrocarbon group having 1 to 20 carbons, wherein at least one —CH2— in these groups is optionally replaced with —O— or —S—, one or two —CH═CH— in these groups are optionally replaced with —CH═N—, and at least one hydrogen in these groups is optionally replaced with fluorine or chlorine; Z is a single bond, —O—, —COO—, or —OCO—; Q is a monovalent group represented by formula (Q-1) or (Q-2), wherein Ra is hydrogen, —O., —OH, or —R1; Rb is hydrogen, fluorine, or —R2; and R1 and R2 are independently alkyl having 1 to 20 carbons, arylalkyl having 1 to 20 carbons, or aryl having 1 to 20 carbons, wherein at least one —CH2— in the alkyl is optionally replaced with —O—, —CO—, —COO—, or —OCO—, and —CH3 located at a terminal of the alkyl is optionally replaced with —NHR3 or —NR4R5, wherein R3, R4 and R5 are independently alkyl having 1 to 10 carbons; wherein in formulae (2) to (4), R11 and R12 are independently alkyl having 1 to 10 carbons or alkenyl having 2 to 10 carbons, wherein at least one —CH2— in the alkyl or alkenyl is optionally replaced with —O—, and at least one hydrogen in the alkyl or alkenyl is optionally replaced with fluorine; ring B1, ring B2, ring B3, and ring B4 are independently 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,5-difluoro-1,4-phenylene, or pyrimidine-2,5-diyl; and Z11, Z12, and Z13 are independently a single bond, —CH2CH2—, —CH═CH—, —C≡C—, or —COO—. |
