申请人:Hodogaya Chemical Co., Ltd.
公开号:EP3683212A1
公开(公告)日:2020-07-22
[Object] It is an object of the present invention to provide, as a material for organic EL device having high efficiency and high durability, an organic compound having excellent characteristics such as excellent electron injection/transport performance, hole blocking performance, and high stability in a film state, and an organic EL device having high efficiency and high durability, which is obtained by using this compound.
[Solving Means] A compound having a pyrimidine ring structure, the compound being represented by the following general formula (1).
(In the formula, A1 represents a substituted or unsubstituted aromatic heterocyclic group. Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group. Ar2 represents a deuterium atom, a trimethylsilyl group, a triphenylsilyl group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group. m represents an integer of 1 to 3, n represents an integer of 0 to 2, and o represents an integer of 1 to 2. In a case where m is an integer of two or more, a plurality of Ar1 bonded to the same pyrimidine ring may be the same or different from each other. In a case where n is an integer of two, a plurality of Ar2 bonded to the same pyrimidine ring may be the same or different from each other. In a case where o is an integer of two, a plurality of A1 bonded to the same pyrimidine ring may be the same or different from each other. However, the sum of the integers of m, n, and o is 4 or less. Note that in a case where n is 0, Ar2 represents a hydrogen atom.)
[目的]本发明的目的是提供一种有机化合物,作为具有高效率和高耐用性的有机电致发光器件的材料,该有机化合物具有优异的特性,例如优异的电子注入/传输性能、空穴阻断性能和在薄膜状态下的高稳定性,以及通过使用该化合物获得的具有高效率和高耐用性的有机电致发光器件。
[解决方法]一种具有嘧啶环结构的化合物,该化合物由以下通式(1)表示。
(式中:A1 代表取代或未取代的芳香杂环基团。Ar1 代表取代或未取代的芳香烃基团、取代或未取代的芳香杂环基团或取代或未取代的融合多环芳香基团。Ar2 代表氘原子、三甲基硅基、三苯基硅基、取代或未取代的芳香族烃基、取代或未取代的芳香族杂环基团或取代或未取代的融合多环芳香族基团。m 代表 1 至 3 的整数,n 代表 0 至 2 的整数,o 代表 1 至 2 的整数。在 m 为两个或两个以上整数的情况下,与同一嘧啶环键合的多个 Ar1 可以相同或不同。在 n 为 2 的整数的情况下,与同一嘧啶环键合的多个 Ar2 可以相同或不同。在 o 为 2 的整数的情况下,与同一嘧啶环键合的多个 A1 可以相同,也可以不同。但是,m、n 和 o 的整数之和必须小于等于 4。注意,在 n 为 0 的情况下,Ar2 代表氢原子)。