ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

摘要

A compound having the structure of formula I:;;is described. In formula I, A1, A2, A3, A4, A5, A6, A7, and A8 can be carbon or nitrogen; at least one of A1, A2, A3, A4, A5, A6, A7, and A8 being nitrogen; X is a neutral donor;;;is a monoanionic bidentate ligand; n is an integer from 1 to 3; ring B is bonded to ring A through a C—C bond; and ring A is bonded to the iridium through a Ir—C bond. In addition, R1, R2, R3, R4, and R6 are 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, nitrite, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof. Also described are formulations and devices, such as an OLEDs, that include the compound of formula I.

主权项

1. A compound having the formula Ir(LA)n(LB)3-n, having the structure: wherein A1, A2, A3, A4, A5, A6, A7, and A8 comprise carbon or nitrogen; wherein at least one of A1, A2, A3, A4, A5, A7, and A8 is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein R1, R2 and R6 independently represent from mono-substitution to the possible maximum number of substitution, or no substitution; wherein any adjacent substitutions in R1, R2, R3, and R4 are optionally linked together to form a ring; wherein X is a neutral donor; whereinis a monoanionic bidentate ligand;
wherein R1, R2, R3, R4, and R6 are independently selected from the group consisting of 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; and wherein n is an integer from 1 to 3.