A light-emitting-layer host material is provided as material for high-efficiency organic electroluminescent devices. The light-emitting-layer host material has a high excitation triplet level, and is capable of completely confining the triplet excitons of phosphorescent material. A high-efficiency and high-luminance organic electroluminescent device is provided by using the compound. The compound is a compound of general formula (1) having a bipyridyl group and an ortho-terphenyl structure. The organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, and uses the compound as constituent material of at least one of the organic layers.
提供一种用于高效有机电致发光器件的发光层主体材料。该发光层主体材料具有高激发三重态能级,并能够完全限制
磷光材料的三重激子。通过使用该化合物,提供了一种高效率和高亮度的有机电致发光器件。该化合物是具有联
吡啶基和邻二苯基结构的通式(1)化合物。有机电致发光器件包括一对电极和夹在电极对之间的一个或多个有机层,并将该化合物用作至少一个有机层的组分材料。