HOST MATERIALS FOR ELECTROLUMINESCENT DEVICES

    公开(公告)号:US20200168811A1

    公开(公告)日:2020-05-28

    申请号:US16683485

    申请日:2019-11-14

    Abstract: A compound of Formula I wherein at least one of R1 or R2 includes a polycyclic group selected from the group consisting of Formula A, Formula B, and Formula C: wherein X1, X2, X3, and X4 are independently CRA or N; X5, X6, X7, and X8 are independently CRB or N; X9, X10, X11, and X12 are independently CRC or N; X13, X14, X15, and X16 are independently CRD or N; X17, X18, X19, and X20 are independently CRE or N; X21, X22, X23, and X24 are independently CRF or N; X25, X26, X27, and X28 are independently CRG or N; X29, X30, X31, and X32 are independently CRH or N; Y is selected from the group consisting of O, S, NR, and CRR′; the maximum number of N atoms that can connect to each other within each ring is two; with the proviso that R1 does not connect to ring B, and R2 does not connect to ring A, and wherein at least one of RC and RD of Formula A is a direct bond or an organic linker, one of RE and RF of Formula B is a direct bond or an organic linker, or one of RG, RH, and RN of Formula C is a direct bond or an organic linker.

Patent Agency Ranking