Π(PI)-conjugated compound, organic electroluminescence element material, light-emitting material, light-emitting thin film, organic electroluminescence element, display device, and illumination device
申请人:Konica Minolta, Inc.
公开号:US11358951B2
公开(公告)日:2022-06-14
In order to provide a novel π-conjugated compound capable of increasing the light-emission efficiency of an organic electroluminescence element, for example, this π-conjugated compound has a structure indicated by general formula (1).
(In general formula (1): Z1-Z6 each independently indicate a hydrogen atom, a deuterium atom, an electron-donating group D, or an electron-withdrawing group A; at least out of two among Z1-Z6 is an electron-donating group D and the other is an electron-withdrawing group A; and at least one ortho position combination Z1 and Z2, Z2 and Z3, Z3 and Z4, Z4 and Z5, Z5 and Z6, or Z6 and Z1 among Z1-Z6 is one combination out of an electron-donating group D and an electron-donating group D, an electron-withdrawing group A and an electron-withdrawing group A, or an electron-donating group D and an electron-withdrawing group A.)
为了提供一种新型π共轭化合物,该化合物能够提高有机电致发光元件的发光效率,例如,该π共轭化合物具有通式(1)所示的结构。
(在通式(1)中:Z1-Z6各自独立地表示一个氢原子、一个氘原子、一个电子供能基团D或一个电子取能基团A;Z1-Z6中至少有两个是电子供能基团D,另一个是电子取能基团A;Z1-Z6 中至少有一个正位组合 Z1 和 Z2、Z2 和 Z3、Z3 和 Z4、Z4 和 Z5、Z5 和 Z6 或 Z6 和 Z1 是一个电子供能基团 D 和一个电子供能基团 D、一个电子取能基团 A 和一个电子取能基团 A 或一个电子供能基团 D 和一个电子取能基团 A 中的一个组合。)