| 摘要 |
A compound having a structure according to formula Ir(L A ) n (L B ) 3-n :
is described. In the structure of Formula Ir(L A ) n (L B ) 3-n : A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8 are each independently either carbon or nitrogen; at least one of A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8 is nitrogen; ring B is bonded to ring A through a C-C bond; the iridium is bonded to ring A through an Ir-C bond;
X is O, S, or Se; R 1 , R 2 ,R 3 , and R 4 each independently represent no substitution up to the maximum possible substitutions; any adjacent substitutions in R 1 , R 2 , R 3 , and R 4 are optionally linked together to form a ring; R 1 , R 2 , R 3 , R 4 , and R 5 are each independently selected from a variety of substituents; and n is 1, 2, or 3. Formulations and devices, such as an OLEDs, that include the compound of Formula Ir(L A ) n (L B ) 3-n are also described. |
