| abstract |
The present invention provides a precursor and a preparation method thereof, wherein the precursor can be dissolved in a solvent, can be converted into the precursor for a light-emitting element material through heating, and is prepared into a coating type organic light-emitting element material by using the coating method for the transfer printing method, the printing method and the like. The precursor for the light-emitting element material can be applied for the fields of display elements, flat panel displays, backlights, illumination, interior design, signs, billboards, electronic cameras, optical signal generation devices and the like. |