Reinforced rare earth doped nano upconversion photosensitive material, preparation method and application thereof

The invention discloses an enhanced rare earth doped nano upconversion photosensitive material, a preparation method and application thereof. The structural formula of the enhanced rare earth doped nano upconversion photosensitive material is shown as a formula (I), wherein R1 is selected from any one of tetraphenylethylene, stilbene and Schiff base pyrene, and R2 is selected from any one of sulfonate radical and carboxylic acid. According to the invention, the light-sensitive material of the enhanced rare earth doped nano upconversionhas a wide light absorption range, a large absorption coefficient and a high fluorescence quantum yield, and can effectively inhibit the concentration quenching of a dye on the surface of rare earth doped nano (UCNPs), improve the compounding ratio of the light-sensitive material to the UCNPs and enhance the luminous intensity from near infrared to visible light; and in the process for preparing the photosensitive material, the purification method is simple, conditions are easy