PYRROMETHENE BORON COMPLEX, LIGHT EMITTING ELEMENT USING SAME, DISPLAY DEVICE, LIGHTING DEVICE, COLOR CONVERSION COMPOSITION, COLOR CONVERSION FILM, COLOR CONVERSION SUBSTRATE, LIGHT SOURCE UNIT AND DISPLAY

摘要

A pyrromethene-boron complex that can be used as a red light fluorescent material with improved emission efficiency and color purity is provided. A pyrromethene-boron complex represented by the following general formula (1) and satisfying at least one of (A) and (B) is provided:wherein, in the formula, X and R¹ to R⁹ are selected from predetermined groups, at least one of four pairs of R¹ and R², R² and R³, R⁴ and R⁵, and R⁵ and R⁶ has a ring structure represented by any one of the following general formulas (2A) to (2D):wherein, in the formulas, R¹⁰¹, R¹⁰² and R²⁰¹ to R²⁰⁴ have the same meaning as R¹ to R⁷ in the general formula (1), Ar is a substituted or unsubstituted aromatic hydrocarbon ring, or a substituted or unsubstituted aromatic heterocycle, R¹⁰¹ and R¹⁰² may form a ring, and * indicates a connection with the pyrromethene skeleton.