| abstract |
The present invention relates to an ionic phosphorescent metal complex and its preparation method and application. The structure of the complex is: [PtM 3 {(PPh 2 CH 2 ) 3 P}(C≡CR)}(C≡CR' )(μ-Cl)] 2+ A n- 2/n ; wherein, M is selected from Au (I) or Ag (I); R, R' the same or different, independently selected from: alkyl, alkenyl , alkynyl, aryl, heteroaryl; said alkyl, alkenyl, alkynyl, aryl, heteroaryl can be substituted by one or more substituents, said substituents are selected from alkyl, alkenyl group, alkynyl, alkoxy, amino, halogen, haloalkyl, aryl, heteroaryl; said substituent is optionally further substituted by one or more of the following groups: alkyl, alkoxy, amino, Halogen, haloalkyl, aryl, heteroaryl; An - is a monovalent or divalent anion, n is 1 or 2; μ - represents a bridge. The organic light-emitting diode prepared by using the complex as the dopant of the light-emitting layer has an external quantum efficiency greater than 10%, and can be applied in the fields of flat panel display and daily lighting. |