Provided is a polar compound having high chemical stability, high capability of aligning liquid crystal molecules, high solubility in a liquid crystal composition, and a large voltage holding ratio when used in a liquid crystal display device. The compound is represented by formula (1):
in which, for example, R1 is alkyl having 1 to 15 carbons; MES is a mesogen group having at least one ring; Sp1 is a single bond or alkylene having 1 to 10 carbons; M1 and M2 are hydrogen; and R2 is a group represented by formulas (1a) to (1c):
in which, Sp2 and Sp3 are a single bond or alkylene having 1 to 10 carbons; S1 is >CH—; S2 is >C<; and X1 is —OH.
本发明提供了一种极性化合物,其
化学稳定性高,液晶分子排列能力强,在液晶组合物中的溶解度高,用于液晶显示设备时电压保持率大。该化合物由式(1)表示:
其中,例如,R1 是具有 1 至 15 个碳原子的烷基;
MES 是具有至少一个环的中间基;Sp1 是单键或具有 1 至 10 个碳原子的亚烷基;M1 和 M2 是氢;R2 是式 (1a) 至 (1c) 所代表的基团:
其中,Sp2 和 Sp3 为单键或具有 1 至 10 个碳原子的亚烷基;S1 为 >CH-;S2 为 >C<;X1 为 -OH。