ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20250002778A1

    公开(公告)日:2025-01-02

    申请号:US18666918

    申请日:2024-05-17

    Abstract: A compound of formula Ir(LA)x(LB)y(LC)z, where x and y are 1 or 2; z is 0 or 1; and x+y+z=3. In the compound, LA comprises Formula I, ligand LB comprises Formula II, and ligand LC is a bidentate ligand. In Formulas I and II, moiety A is a monocyclic ring or a polycyclic fused ring system; each of X1 to X14 is C or N; Y is a linking group; each R1-R2, R, R′, and RA-RE is hydrogen or a General Substituent defined herein; at least one of R1 and R2 is a tertiary alkyl group; and (1) at least one pair of RB or RC substituents are joined or fused to form a ring, or (2) at least one RC or RB comprises an electron-withdrawing group other than nitrile, or (3) X11 is N, R1 is a tertiary alkyl group. Formulations, OLEDs, and consumer products containing the compound are also provided.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20240423085A1

    公开(公告)日:2024-12-19

    申请号:US18666925

    申请日:2024-05-17

    Abstract: A compound comprising a first ligand LA of Formula I, is provided. In the compound, ring B is a 5- or 6-membered ring; each of Z and X1 to X4 is C or N; Y is a linking atom; K is a direct bond or a linking atom; each R*, RA, RB, and RC is hydrogen or a General Substituent defined herein; a total of at least two of RB and/or RC substituents are independently electron-withdrawing groups; and LA is coordinated to a metal M, having an atomic mass of at least 40. Formulations, OLEDs, and consumer products containing the compound are also provided.

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