Preparation of single-component organic solid light-emitting material and regulation and control method of light-emitting color of single-component organic solid light-emitting material

The invention relates to the field of material preparation and characterization, and discloses a method for preparing a single-component organic solid luminescent material and regulating and controlling the luminescent color, and the regulating and controlling method comprises the following steps: preparing an amorphous nano-particle suspension of the single-component organic solid luminescent material; and regulating and controlling the proportion of the amorphous phase to the crystal phase in the nanoparticles by regulating and controlling the amorphous-crystal phase transformation process and degree in the nanoparticle suspension, and controlling the light color of the organic solid light-emitting material. The nanoparticles are extracted from the suspension by means of freeze drying or suction filtration or centrifugal separation, so that the single-component organic solid luminescent material can be obtained. The single-component organic solid luminescent material with specific luminescent property can b