Triphenylphosphine oxide based on thermal excitation delayed fluorescent blue guest material, preparation method and application

Triphenylphosphine oxide based on thermal excitation delayed fluorescent blue guest material, preparation method and application, which relates to a blue fluorescent guest material, preparation method and application. Since the present invention is to solve the electron donor and acceptor intensity difference is large, resulting in increased electron donor, the object appears red shift the emission wavelength, and thus can not achieve stable, efficient blue light emitting guest technical problems. Its structural formula is as follows: Method: a preparation PXZPhBr, PXZPhBr, PTZPhBr, DMACPhBr; two, a product of the mixing step, and tetrahydrofuran, was added n-butyl lithium, diphenylphosphoryl chloride, hydrogen peroxide was added with stirring, chromatography, re crystallization, ie. Material of the present invention applied to the preparation of thermally excited electroluminescent device electrically delayed fluorescence. Material of the present invention, using a modification strategy minor axis, and maintained the triplet level of the matrix, the molecular structure of the donor - acceptor (D-A) molecules, balanced injection and transportation of carriers. The present invention belongs to the field of preparation of the fluorescent material.