Patent ID: 7078114

Claim:
A phosphorescent compound represented by general formula [formula 1]: wherein R 1 is an alkyl group, an aryl group, a substituted aryl group, a heterocyclic group, or a substituted heterocyclic group, Also, R 2 is hydrogen, an alkyl group, an aryl group, a substituted aryl group, a heterocyclic group, or a substituted heterocyclic group. Also, R 3 and R 4 , each of which may be the same or different, are individually hydrogen, a halogen element, an alkyl group, an alkoxy group, an aryl group, a substituted aryl group, a heterocyclic group, or a substituted heterocyclic group. Also, M is at least one element of group 9 in the periodic table or at least one element of group 10 in the periodic table. When the M is at least one element of group 9 in the periodic table, n=2. When the M is at least one element of group 10 in the periodic table, n=1. Also, L is a monoanionic ligand having a β-diketone structure, a monoanionic bidentate chelate ligand having a carboxyl group, or a monoanionic bidentate chelate ligand having a phenolic hydroxyl group.