PHOSPHORESCENT HOMOLEPTIC TRIS-[DEUTERATED-2(2-PYRIDINYL)PHENYL]-IRIDIUM COMPLEXES FOR USE IN LIGHT-EMITTING DEVICES
申请人:Universal Display Corporation
公开号:EP3882254A1
公开(公告)日:2021-09-22
Metal iridium complexes, devices containing the same, and formulations including the same described. The complexes can have the formula Ir(L1)n(L2)3-n, wherein the first ligand L1 has Formula I,
the second ligand L2 has Formula II,
L1 is different from L2; R1 is a partially or fully deuterated group consisting of alkyl and cyloalkyl; R2 represents mono, di, tri substitutions or no substitution; R3, R4 and R5 each represent mono, di, tri, tetra substitutions or no substitution; R2 and R3are each independently selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; R4 and R5 are each 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 n is 1 or 2. Homoleptic, tris-iridium complex including deuterated alkyl groups are also described.
所述的金属铱配合物、含有金属铱配合物的装置以及包括金属铱配合物的制剂。这些配合物可具有式 Ir(L1)n(L2)3-n,其中第一配体 L1 具有式 I、
第二配体 L2 具有式 II、
L1 与 L2 不同;R1 是由烷基和环烷基组成的部分或完全氚代的基团;R2 代表单取代基、二取代基、三取代基或非取代基;R3、R4 和 R5 各自代表单取代基、二取代基、三取代基、四取代基或非取代基;R2 和 R3 各自独立地选自氢、氘、烷基、环烷基及其组合组成的组;R4 和 R5 各自独立地选自氢、氘、卤化物、烷基、环烷基、杂烷基、芳烷基、烷氧基、芳氧基、氨基、硅烷基、烯基、环烯基、杂烯基、炔基、芳基、杂芳基、酰基、羰基、羧酸、酯、腈、异腈、硫酰基、亚砜基、磺酰基、膦基及其组合组成的组;以及 n 为 1 或 2。此外,还介绍了包括氚化烷基在内的同色三铱络合物。