Self-luminous fluorescent microsphere and preparation method thereof

The invention discloses a self-luminous fluorescent microsphere and a preparation method thereof, which belong to the technical field of a functional material. According to the invention, a modified St-ber method is employed, phenol, formaldehyde or glutaraldehyde are subjected to a sol-gel reaction to prepare the fluorescent microsphere having self-luminous characteristic, and the fluorescence has the advantages of lasting luminescence and difficult quenching. The used preparation method is simple, no surfactant and emulsifier is required, and phenol and formaldehyde (or glutaraldehyde) are reacted in water under ammoniacal liquor catalysis at low temperature (the reaction temperature is no higher than 95 DEG C). The prepared fluorescent microsphere has the advantages of controllable particle size, uniform distribution, monodispersion, self-luminous characteristic, lasting luminescence and difficult quenching. The self-luminous fluorescent microsphere can be stably dispersed in water, ethanol, acetone, and t