This polarized light-emitting film contains a water-soluble coumarin compound represented by formula (1) (in formula (1), A represents an optionally substituted coumarin skeleton, X represents a sulfo group or a carboxyl group, and n represents an integer of 1 to 3.) or a salt thereof.
这种偏振发光薄膜含有由式(1)代表的
水溶性
香豆素化合物(在式(1)中,A代表任选取代的
香豆素骨架,X代表磺基或羧基,n代表1至3的整数)或其盐。