ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20240415003A1

    公开(公告)日:2024-12-12

    申请号:US18657900

    申请日:2024-05-08

    Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, moiety A is a monocyclic ring or a polycyclic fused ring system, moiety B is a polycyclic fused ring system; each of Z1 to Z4 is C or N; each of K1 and K2 is a direct bond or a linker; at least one RB or RA comprises, where T is B, C, N, Si, Ge, Bi, or P; V is a direct bond or a linker; R1 and R2 are present, and R3 is optionally present; each substituent is independently hydrogen or a General Substituent defined herein; and at least two of R1, R2, and R3 has two or more carbon atoms. Formulations, OLEDs, and consumer products containing the compound are also provided.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20240409807A1

    公开(公告)日:2024-12-12

    申请号:US18650332

    申请日:2024-04-30

    Abstract: This disclosure provides a compound, Ir(LA)p(LB)q(LC)r, where LA has a structure of Formula IA: LB has a structure of Formula IB: and LC is a bidentate ligand. In Formulas IA and IB, p and q are 1 or 2; r is 0 or 1; and p+q+r=3; moiety A is a monocyclic ring or a polycyclic fused ring system; Y is a linker that forms a 5-membered ring; each of Z1, Z2, and X1 to X16 is C or N; each substituent is hydrogen or a General Substituent defined herein; and at least one of RD or RE is a heterocycle, provided that (a) if RE is a heterocycle comprising one heteroatom, then p=1 and moiety A is not a fused imidazole; and (b) if one RD is pyridine, then each of X1-X8 is C. Formulations, OLEDs, and consumer products containing the compound are also provided.

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