An organic electroluminescent device comprising: a pair of electrodes comprising an anode and a cathode, and one or more layers arranged between the anode and the cathode; wherein at least one of the one or more layers is a light emitting layer and wherein the one or more layers, comprises an organic compound represented by a substituted 2,2'-biimidazole. The substitutents on the biimidazole may be selected form a range of suitable substituents, including: hydrogen, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, a substituted aryl group containing at least one atom selected from the group consisting of N, O, S, Si, P, F, Cl, Br; and/or comprising at least three organic rings, the organic rings being fused or non-fused, or a number of the adjacent substituent sites may together form a substituted or unsubstituted cyclic group; furthermore some substituents may be the same or different and may be selected from the group consisting of: hydrogen, deuterium, a substituted or unsubstituted alkyl group, a halogen atom or a cyano group.
一种有机电致发光器件,包括:一对电极,包括阳极和阴极,以及安排在阳极和阴极之间的一个或多个层;其中一个或多个层中至少有一层是发光层,而且一个或多个层包括由取代的2,2'-联
吡唑表示的有机化合物。联
吡唑上的取代基可以从一系列适当的取代基中选择,包括:氢、取代或未取代的杂环基、取代或未取代的烷基、取代或未取代的芳基、含有来自N、O、S、Si、P、F、Cl、Br的至少一个原子的取代芳基;和/或包括至少三个有机环,这些有机环被融合或非融合,或者相邻取代位点的一些可能共同形成取代或未取代的环状基团;此外,一些取代基可能相同或不同,并且可以从氢、
氘、取代或未取代的烷基、卤素原子或
氰基的组中选择。