Phosphorescent compound, preparation method thereof and organic electroluminescent device

The invention discloses a phosphorescent compound, a preparation method thereof and an organic electroluminescent device, and belongs to the fields of chemical synthesis and photoelectric materials. The structural general formula of the phosphorescent compound is shown in the specification, and in the formula, X is C or N; Ar is one of C1-C30 alkyl, C2-C30 alkenyl, C2-C30 alkynyl, C3-C30 cycloalkyl, C1-C30 alkoxy, C1-C60 alkylamino, C6-C60 aryloxy, C6-C60 arylthio, C3-C10 heterocycloalkyl, C5-C30 spiro groups, C6-C30 condensed rings, C6-C30 aryl, C3-C10 heteroaryl, C3-C10 heteroarylamino, C6-C60 arylamino, and monocyclic or polycyclic C3-C10 aliphatic rings or C3-C10 aromatic rings formed by connecting with adjacent substituent groups. The phosphorescent compound can be used as a materialof the organic electroluminescent device so as to improve the luminous efficiency and prolong the service lifetime of the organic electroluminescent device. 本发明公开了一种磷光化合物、其制备方法及有机电致发光器件，属于化学合成及光电材料领域，其结构通式为：式中，X为C或N；Ar为C1～C30