| 摘要 |
<p>Provided is a red phosphorescence compound showing excellent color purity, light-emitting efficiency and long life-time. A red phosphorescence compound has a structure represented by the formula 1. In the formula 1, the formula (1-a) is the formula (1-b); R1, R2, R3, and R4 are independently a hydrogen, at least one C1-C6 alkyl group and a C1-C4 alkoxy group; and R5, R6, and R7 are independently a hydrogen, a C1-C6 alkyl group and a C1-C4 alkoxy group. The formula (1-c) is selected among 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.</p> |
