申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0517542A1
公开(公告)日:1992-12-09
An organic electroluminescence device comprising: a luminous layer containing a luminous material and a hole transport material, or a luminous layer containing a luminous material and a hole transport layer containing a hole transport material, between a pair of electrodes at least one of which is transparent or translucent, characterized in that the hole transport material contains an aromatic amine selected from the group consisting of compounds represented by the formulae (1) to (4)
wherein each of Ar₁, Ar₂, Ar₃, Ar₄, Ar₅ and Ar₆ independently represents an aromatic hydrocarbon ring group having six or more carbon atoms or an aromatically heterocyclic compound group having four or more carbon atoms, x represents an integer of 2 or more, and each of A₁, A₂, A₃, A₄, A₅, A₆, A₇, A₈, A₉, A₁₀ and A₁₁ independently represents a group selected from the following formulae (5) to (13) (plural A₁₁s may be the same or different);
wherein each of R₁ to R₇, R₉ to R₁₁ and R₁₃ to R₁₈ independently represents a member selected from the group consisting of C₁-C₁₂ alkyl and alkoxy groups, C₆-C₁₄ aryl and aryloxy groups, a nitro group and heterocyclic compound groups; when one benzene ring or pyridine ring has plural substituents, they are selected independently; each of R₈ and R₁₂ independently represents a member selected from the group consisting of a hydrogen atom and C₁-C₁₂ alkyl groups; and a, b, c, d, e, f, g, h, i, j, k, l, m, n, o and p represent integers of 0 ≦ a, b, g ≦ 5, 0 ≦ c, d, e, f, h, i, k, m, o, p ≦ 4 and 0 ≦ j, l, n ≦ 3.
一种有机电致发光器件,包括:在一对电极(其中至少有一个是透明或半透明的)之间的发光层,该发光层含有发光材料和空穴传输材料,或发光层含有发光材料,空穴传输层含有空穴传输材料,其特征在于空穴传输材料含有选自由式(1)至(4)表示的化合物组成的组的芳香胺
其中 Ar₁、Ar₂、Ar₃、Ar₄、Ar₅ 和 Ar₆ 各自独立地代表具有六个或六个以上碳原子的芳香烃环基或具有四个或四个以上碳原子的芳香杂环化合物基团、A₁₀ 和 A₁₁ 独立地代表选自下式 (5) 至 (13) 的基团(复数 A₁₁ 可以相同或不同);
其中 R₁ 至 R₇、R₉ 至 R₁₁ 和 R₁₃ 至 R₁₈ 各自独立地代表选自由 C₁-C₁₂ 烷基和烷氧基组成的组的成员、C₆-C₁₄芳基和芳氧基、硝基和杂环化合物基团;当一个苯环或吡啶环上有多个取代基时,它们是独立选择的;R₈ 和 R₁₂ 各自独立地代表选自氢原子和 C₁-C₁₂ 烷基的成员;和 a、b、c、d、e、f、g、h、i、j、k、l、m、n、o 和 p 代表 0 ≦ a、b、g ≦ 5、0 ≦ c、d、e、f、h、i、k、m、o、p ≦ 4 和 0 ≦ j、l、n ≦ 3 的整数。