Soluble functional polyimide containing rigid non-planar conjugated structure, and preparation method and application thereof

The invention discloses a soluble functional polyimide containing rigid non-planar conjugated structure, and a preparation method and application thereof. The polyimide disclosed by the invention is prepared from aromatic diamine and various tetracid dianhydrides by an imidization method. The polyimide disclosed by the invention is soluble in NMP (N-methylpyrrolidone), DMSO (dimethyl sulfoxide), DMAc (dimethyl acetylamide), DMF (N,N-dimethylformamide), m-Cresol, THF (tetrahydrofuran) and any other conventional organic solvent, and has the advantages of high glass transition temperature, high thermal stability, excellent mechanical properties, photoluminescence and the like. The synthesis method disclosed by the invention has the advantage of simple and multiple techniques, and thus, is suitable for industrial production; and the polyimide disclosed by the invention can be used for preparing photoluminescent materials, and is widely applicable to the fields of high and new technology industries, such as electronics, micro-electronics, information, luminescent material, aerospace and the like.