| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel azo-based dichroic dye having an absorption maximum wavelength in a long wavelength region while maintaining a high order parameter (S value), a liquid crystal composition containing the dye, and a liquid crystal element.SOLUTION: The azo-based dichroic dye is represented by structural formula (I) (where R, Rand Reach independently represent an arbitrary monovalent group; A represents a hydrogen-bonding substituent; each ring Ar represents an optionally substituted thienothiazole group, an optionally substituted 1,4-phenylene, or an optionally substituted 1,4-naphthylene ring; n represents an integer of 2 or more; and a plurality of rings Ar may be the same or different).SELECTED DRAWING: None |
