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    Organic electroluminescent materials and devices
    3.
    发明授权
    Organic electroluminescent materials and devices 有权

    公开(公告)号：US12122793B2

    公开(公告)日：2024-10-22

    申请号：US16830850

    申请日：2020-03-26

    Applicant: UNIVERSAL DISPLAY CORPORATION

    Inventor： Alexey Borisovich Dyatkin ,  Jui-Yi Tsai ,  Walter Yeager ,  Pierre-Luc T. Boudreault ,  Zhiqiang Ji ,  Alan DeAngelis

    IPC: H01L51/00 ,  C07F15/00 ,  H10K85/30 ,  H10K50/12

    CPC classification number: C07F15/0033 ,  H10K85/342 ,  H10K50/12

    Abstract: A compound comprising a first bidentate ligand LA, wherein LA comprises a structure of Formula I;






    wherein Z is selected from the group consisting of O, S, NR, BR, CRKRL, SiRKRL, —CRKRLCRMRN—, —SiRKRLSiRMRN—, —CRKRLO—, —SiRKRLO—, and —CRK═CRL—;
    wherein ring A, ring B, and ring C are each independently a 5-membered carbocyclic ring, 5-membered heterocyclic ring, 6-membered carbocyclic ring or 6-membered heterocyclic ring;
    wherein LA is coordinated to a metal M forming a 5-membered chelate ring;
    wherein M is selected from the group consisting of Ir, Pt, Pd, Ru, Rh, Os, Re, Cu, Ag, and Au;
    wherein RA, RB, and RC each represent mono to the maximum allowable substitution, or no substitution;
    wherein each R, RK, RL, RM, RN, RA, RB, and RC is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
    wherein M is optionally coordinated to one or more other ligands;
    wherein any two substituents are optionally joined or fused together to form a ring; and
    with the provision that LA does not comprise the following structure:

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