Using a compound that contains a structure where a carbazol-9-yl group substituted with a perfluoroalkyl group at the 2-position and the 7-position and a structural unit having a positive Hammett constant σp (but excluding an aromatic hydrocarbon group) bond to each other directly or via a π-conjugated linking group, wherein at least a part of the carbazol-9-yl group and at least a part of the structural unit having a positive Hammett constant σp and, if any, the π-conjugated linking group form a π-electron conjugated system, an organic light emitting device having a high emission efficiency can be provided.
使用一种化合物,该化合物含有在 2 位和 7 位上被
全氟烷基取代的
咔唑-9-基团和具有正哈米特常数 σp 的结构单元(但不包括
芳香烃基)直接或通过 π-共轭连接基团相互键合的结构、其中至少一部分
咔唑-9-基团和至少一部分具有正哈米特常数σp 的结构单元以及(如有)π-共轭连接基团形成一个 π-电子共轭体系,可提供一种具有高发射效率的有机发光器件。