Preparing method for 4-[(8-hydroxy-5-quinoline) azo]-zinc benzoate complex with purple light performance

The invention provides a preparing method for 4-[(8-hydroxy-5-quinoline) azo]-zinc benzoate complex with purple light performance and relates to an organic light-emitting material and a preparing method thereof. The preparing method solves the problem that an existing purple light organic light-emitting material is low in brightness and light-emitting efficiency. A molecular formula of the complex is C16H13N3O5Zn. The method for preparing the purple light organic light-emitting material comprises the following steps that a coordination polymer is prepared; ligand and zinc chloride are dissolved into a solvent, then NaOH is used for adjusting a pH value, the mixture is stirred for 30 minutes at room temperature and placed into a reaction kettle with a polytetrafluoroethylene inner lining, programming temperature rises to 100 DEG C, and a red long rhombus crystal is obtained after 72 hours. A product prepared through the method is the single crystal perfect in crystal shape; the prepared blue light organic light-emitting material has blue light fluorescence through light-emitting performance testing, and has higher thermal stability and an excellent film forming characteristic, and the yield of the prepared product is high and is over 50%.