8-hydroxyquinaldine cuprous coordination complex yellow phosphorescent material

The invention discloses a crystal form non-deprotonated 8-hydroxyquinaldine ligand based cuprous coordination complex yellow phosphorescent material and a preparation method thereof. A phosphorescent coordination complex is obtained by complexing of cuprous salt and ligand, and a molecular structure is [Cu(Xantphos)(8-HOXQ)](PF6), wherein Xantphos refers to electrically neutral diphosphine ligand 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene, and 8-HOXQ refers to neutral heterocyclic ligand 8-hydroxyquinaldine. The coordination complex has advantages of easiness in micromolecular purification and high luminous efficiency and is high in thermal stability. The material which is obtained by direct mixing reaction of Cu(CH3CN)4PF6 and ligand acetonitrile/dichloromethane solution has advantages of simplicity and convenience in process, equipment simplicity, easiness in acquisition of raw materials, low cost and the like. The material can serve as a photoluminescence yellow phosphorescent material and can also se