Novel delay fluorescent material and preparation method thereof

The invention belongs to the technical field of luminescent material synthesis, and relates to a novel delay fluorescent material and a preparation method thereof, a metal source, an organic phosphinesource, water, methylamine or N,N-dimethylformamide or N,N-diethyl formamide and hydrofluoric acid are mixed to obtain a mixture; and the mixture is put into a stainless steel high-pressure reactioncontainer with a polytetrafluoroethylene reaction kettle for crystallization for 7 days to obtain a flaky colorless crystal; and the flaky colorless crystal is washed with deionized water, suction-filtered, and dried in sequence at room temperature to prepare three blue-light-delay fluorescent materials with excellent performance; the preparation method is simple, the raw materials are easy to obtain, the cost is low, the time consumption is low, and the prepared delay fluorescent material is long in service life and adjustable in guest induction. 本发明属于发光材料合成技术领域，涉及类新型延迟荧光材料及其制备方法，先将金属源、有机膦源、水、甲胺或N,N-二甲基甲酰胺或N,N-二乙基甲酰胺以