申请人:BOE Technology Group Co., Ltd.
公开号:EP3444257A1
公开(公告)日:2019-02-20
The present disclosure relates to organic electroluminescent materials and organic electroluminescent devices, in particular, discloses a compound of formula (1), wherein R1, R2, R3 and R4 are each independently selected from hydrogen, a substituted or unsubstituted C1-20 alkyl, a substituted or unsubstituted C3-20 cycloalkyl, a substituted or unsubstituted aromatic hydrocarbyl, or a substituted or unsubstituted aromatic heterocyclic group; and at least one of R1, R2, R3 and R4 contains a group having a hole-transporting ability; and at least one of R1, R2, R3 and R4 contains a group having an electron-transporting ability; A and B each independently represent hydrogen, a substituted or unsubstituted, fused aromatic ring, or a substituted or unsubstituted, fused heteroaromatic ring containing a heteroatom(s) selected from O, N and S.
本公开涉及有机电致发光材料和有机电致发光器件,尤其公开了一种式(1)化合物,其中R1、R2、R3和R4各自独立地选自氢、取代或未取代的C1-20烷基、取代或未取代的C3-20环烷基、取代或未取代的芳香烃基或取代或未取代的芳香杂环基;R1、R2、R3 和 R4 中至少有一个含有具有空穴传输能力的基团;R1、R2、R3 和 R4 中至少有一个含有具有电子传输能力的基团;A 和 B 各自独立地代表氢、取代或未取代的融合芳环或含有选自 O、N 和 S 的杂原子的取代或未取代的融合杂芳环。