| 摘要 |
A compound having the formula Ir(L A ) n (L B ) 3-n , having the structure:
Formula I, is described. In formula Ir(L A ) n (L B ) 3-n , n is either 1 or 2; R 1 , R 2 , R 4 , and R 5 each independently represent up to the maximum number of substitutions or no substitutions; X 1 , X 2 , X 3 , and X 4 are each independently C or N; and at least one of X 1 , X 2 , X 3 , and X 4 is N. In addition, any adjacent substituents of R 1 , R 2 , R 3 , R 4 , and R 5 are optionally linked together to form a ring, and each R 1 , R 2 , R 3 , R 4 , and R 5 is independently selected from hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof. Formulations and devices, such as an OLEDs, that include the compound of formula Ir(L A ) n (L B ) 3-n are also described. |
