| 摘要 |
A compound of formula (1) wherein: X is 0, S, NR11, CR111 or SiR111 wherein R1l in each occurrence is independently a substituent; R1 is a substituent; R2, R3, and R4 are each independently H or a substituent;R5 and R6 independently in each occurrence is a substituent; m independently in each occurrence is 0, 1 or 2; and n independently in each occurrence is 0, 1, 2, 3 or 4. The compound may be used as a host for a phosphorescent light-emitting dopant in an organic light-emitting device. Also shown is a method of forming an organic light-emitting device using the compound in the light-emitting layer. |
