Abstract:Photonic crystals are artificial crystals whose dielectric constant varies periodically as the light wave-length. Benefited from the band structure, photonic crystal can modulate the luminescence of fluorescent materials. We prepared Shape memory photonic crystals (SMPCs) through de-template method con-structed by polyethylene glycol (600) diacrylate (PEGDA) and tetrafunctional aliphatic polyurethane acrylate (PUA) copolymer system with a mass ratio of 1:5, then investigated the effect of SMPCs on the luminescence of fluorescent objects embedded in it. The results showed that the SMPCs had a lumines-cent inhibition effect of 83% on fluorescein dyes. Due to the plastic deformation of copolymer, this SMPCs has good pressure compilation and temperature trigger recovery performance. Based on features mentioned above, SMPCs can carry out reversible transformation between diverse microstructures, and then realize the reversible modulation of luminescence. After patterning technic on the surface with digi-tal stamp, 100μm grating and 50×50μm dot matrix photomask, the devices will present diverse patterns under different optical conditions.