The invention discloses a near-
infrared two-region imaging material and a preparation method and application thereof, and belongs to the technical field of photoelectric functional materials. The near-
infrared two-region imaging material is an aza-
fluorine boron pyrrole derivative NJ1040; the preparation method comprises the following steps: dissolving 2-acetylthiophene in
ethanol to obtain a
mixed solution, adding a
potassium hydroxide aqueous solution, stirring, adding 4-diethylaminobenzaldehyde, stirring, and extracting;
drying the extracted organic phase, and performing rotary
evaporation concentration and purification to obtain an intermediate I; mixing the intermediate I,
diethylamine and
nitromethane, reacting, extracting,
drying the extracted organic phase, and performing rotary
evaporation concentration and purification to obtain an intermediate II; mixing the intermediate II,
ammonium acetate and
ethanol for reaction, adding
triethylamine and a
boron trifluoride diethyl etherate complex for
continuous reaction after rotary
evaporation concentration, and extracting; and
drying the extracted organic phase, carrying out rotary evaporation concentration, and purifying to obtain the product. NJ1040 nanoparticles are prepared by a nano
coating technology, so that the problem of poor
solubility of a contrast agent is solved.