| abstract |
(57) [Summary] [Purpose] A purple to blue trisazo dye that has high dichroism and tinting power and becomes a display device with excellent contrast when formed into a composition with a liquid crystal, particularly a fluorine-based liquid crystal. provide. [Structure] [Chemical 1] (In the formula, R 1 and R 2 represent an alkyl group, an alkoxyalkyl group, a fluoroalkyl-substituted alkyl group, or an aralkyl group which may have a substituent such as an alkyl group, and are linked to each other to be contained. A nitrogen aliphatic ring may be formed, n represents 3 to 18, and Z 1 , Z 2 ; Z 4 , Z 5 ; Z 7 , Z 8 ; Z 10 , Z 11 may be linked to each other to form a ring, and R 1 , Z 11 or R 2 , Z 12 may be linked to each other to form a nitrogen-containing aliphatic ring. May be. ) |