A novel compound having high triplet excitation energy and a bipolar property is provided. Specifically, a phenanthrene compound represented by General Formula (G1) is provided where R
11
to R
19
and R
21
to R
27
separately represent any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and Z represents a sulfur atom or an oxygen atom. The use of the phenanthrene compound as a host material of a light-emitting layer in the presence of a phosphorescent dopant allows the formation of a light-emitting element with high current efficiency.
提供了一种具有高三重激发能和双极性属性的新化合物。具体地,提供了一种由通式(G1)表示的
菲咯啉化合物,其中R11至R19和R21至R27分别表示氢、具有1至4个碳原子的烷基基团以及具有6至13个碳原子的取代或未取代芳基基团,Ar表示具有6至13个碳原子的取代或未取代
芳烃基团,Z表示
硫原子或氧原子。在
磷光掺杂剂存在的情况下,使用
菲咯啉化合物作为发光层的主体材料,可以形成具有高电流效率的发光元件。