PHOSPHORESCENT PtAg2 COMPLEX, PREPARATION METHOD THEREFOR AND USE THEREOF

The present invention relates to an ionic type phosphorescent metal complex with a racemization structure, a preparation method therefor and use thereof. The structure of the complex is [PtAg2{rac-(PPh2CH2PPhCH2-)2}(C≡CR)2(PR'3)2]2+An- 2/n or [PtAg2{meso-(PPh2CH2PPhCH2-)2}(C≡CR)2(PR'3)(μ-X)]+ mAm-, wherein R is the same or different and is independently selected from alkyl, aryl, heteroaryl, and heteroaryl aryl; R' is the same or different and is independently selected from alkyl, aryl, and heteroaryl; the alkyl, aryl, and heteroaryl can be substituted by one or more substituents which are selected from alkyl, alkenyl, alkynyl, alkoxy, amino, halogen, halogenated alkyl, and aryl; X is halogen; Am- and An- are monovalent or bivalent anions; and m or n is 1 or 2. The present invention also relates to an organic light emitting diode, a preparation method therefor and use thereof. The organic light emitting diode prepared by taking the phosphorescent metal complex of the present invention as a luminous layer dopa