Solid up-conversion system taking 1, 4-di (2 '-cyano styrene) benzene as annihilation agent as well as preparation method and application of solid up-conversion system

The invention discloses a preparation method of 1, 3-diphenylmethane. The invention discloses a solid up-conversion system taking 2, 4-di (2 '-cyano styrene) benzene as an annihilation agent and a preparation method and application of the solid up-conversion system, red-to-green solid enhanced up-conversion is realized, a solid up-conversion material is obtained through a solvent evaporation method assisted by a surfactant, an up-conversion enhancement way from a solution state to a solid state is realized, and compared with the solution state, the solid up-conversion system has the advantages that the solid up-conversion system is simple in structure and convenient to operate. The solid upconversion efficiency is up to 27.87%, the limitation of an upconversion solution state application scene is overcome, and the prepared film has potential application value in the fields of anti-counterfeiting encryption and photoelectric devices. 本发明公开了一种以1,4-二(2'-氰基苯乙烯)苯为湮灭剂的固体上转换体系及其制备方法与应用，实现了红-转-绿的固态化增强上转换，并通过表面活性剂辅助下的