ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20250072278A1

    公开(公告)日:2025-02-27

    申请号:US18915633

    申请日:2024-10-15

    Abstract: A heteroleptic compound of formula Ir(LA)m(LB)n(LC)p is provided wherein LA has a structure of Formula IA, or Formula IB, LB has a structure of Formula II, and LC is a bidentate ligand; and wherein m is 1 or 2; n is 1 or 2; and p is 0 or 1; and m+n+p=3 In Formulae I and II, moieties A and D are heterocyclic ring or a polycyclic ring system; each of X1 to X12 is C or N; Ring B is connected to moiety A by a C; at least one of X9 to X12 is N; Y is a linking group that forms a 5-membered ring; each R, R′, R″, RA, RB, RC, RD, and RE is hydrogen or a General Substituent as defined herein; LA forms a 5-membered chelate ring with Ir. Formulations, OLEDs, and consumer products containing the compound are also provided.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20250063936A1

    公开(公告)日:2025-02-20

    申请号:US18780684

    申请日:2024-07-23

    Abstract: A compound E1 capable of functioning as an emitter an organic light emitting device (OLED) at room temperature is provided. The compound is a metal coordination complex; the metal coordination complex comprises a first ligand, LA, that comprises a first group; and the metal coordination complex comprises a covalent bond between the metal and the first group; wherein the transition dipole moment (TDM) of the emissive state of the complex has a vector, wherein an angle formed between the TDM vector and the covalent bond between the metal and the first group is less than or equal to 40°, and wherein an excited state of the metal coordination complex has a LC character localized on the first group of greater than or equal to 45%. Formulations, OLEDs, and consumer products containing the compound are also provided.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20240407249A1

    公开(公告)日:2024-12-05

    申请号:US18667006

    申请日:2024-05-17

    Abstract: A compound of Formula Ir(LA)x(LB)y(LC)z is provided, where the first ligand LA comprises a structure of Formula I,  the ligand LB comprises a structure of Formula II,  and the ligand LC is a bidentate ligand. In the compound, each of A1 to A8, X1 to X4, Z1, and Z2 is C or N; at least one of X1 to X4 is N, or at least one RA is electron withdrawing group, a silyl group, a germyl group, a heteroalkyl group, a cycloalkyl group, a hetrocycloalkyl group, an alkyl group having three or more carbon atoms, or combinations thereof; Y is a linking group; moiety C is a monocyclic ring or a polycyclic fused ring system; and each R, R′, R1, R2, R3, R4, RA, RB, RC, and RD is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound are also provided.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20240180021A1

    公开(公告)日:2024-05-30

    申请号:US18481087

    申请日:2023-10-04

    CPC classification number: H10K85/342 C07F15/0033 C09K11/06 H10K50/12

    Abstract: A compound comprising a first ligand LA of Formula I,




    is provided. In Formula I, each of X1 to X6 is C or N; K is a direct bond, O, S, N(Rα), P(Rα), B(Rα), C(Rα)(Rβ), or Si(Rα)(Rβ); LA is coordinated to Ir through the indicated dashed lines; at least one of the following conditions is true: (1) R1 comprises at least five carbon atoms, and (2) two RB substituents are joined together to form a structure of Formula II,




    fused to ring B; X is CRX or N; Y is selected from a variety of linkers; each R, R′, R″, Rα, Rβ, RA, RB, RX, R1, and R2 is hydrogen or a General Substituent; and Ir may be coordinated to other ligands. Compositions, OLEDs, and consumer products including the compound are also provided.

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