摘要 |
PURPOSE: A blue phosphorescent material is provided to improve color purity and luminous efficiency of a blue phosphorescent layer, thereby suitable for a blue phosphorescent layer. CONSTITUTION: A blue phosphorescent material composition is shown in chemical formula 1. In chemical formula 1, R1-R7 is hydrogen, fluorine, chlorine, a C1-6 alkyl group, a C6 or above substituted or unsubstituted aromatic group, a C5 or above substituted or unsubstituted heterocyclic group, or an amine group substituted by a C1-6 alkyl group, a C6 or above substituted or unsubstituted aromatic group, or a C5 or above substituted or unsubstituted heterocyclic group, X is monoanionic bidendate ligand, and n is a positive integer of 3 or less.
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