Novel azo dichroic dye, and liquid crystal composition and liquid crystal device containing the azo dichroic dye

摘要

PROBLEM TO BE SOLVED: To provide a novel azo-based dichroic dye, and a liquid crystal composition, a liquid crystal element and the like using the dye.SOLUTION: The azo-based dichroic dye is represented by formula (I). In formula (I), Arrepresents an aromatic ring and at least one of Aris a thienothiazole ring; Xrepresents O or -NR-; Rto Reach independently represent H, an alkyl group or the like; Lto Leach independently represent a divalent connecting group or a single bond; Ato Aeach independently represent a substituted/unsubstituted 1,4-phenylene group or a substituted/unsubstituted (E)-cyclohexane-1,4-diyl group; nand n, and nand neach independently represent an integer of 0 or more, provided that n+n≥1 and m+n≥2; nis an integer of 1 or more, and when nis 2 or more, two of Aror more may be the same or different from each other; and Brepresents a group having H that can form a hydrogen bond.SELECTED DRAWING: Figure 1