Synthesis and characterization of apHand photoresponsive copolymer of acrylamide and spiropyran

In this research, the solution properties of acrylamide and spiropyran acrylate copolymers were investigated. Spiropyran acrylate was synthesized by the reaction of 1 ',3 ',3 '-trimethyl-6-hydroxyspiro(2H-1-benzopyran-2,2 '-indoline) and acryloyl chloride. The free radical solution polymerization was used to attain a specialty responsive polymer. Characterization was carried out using nuclear magnetic resonance (NMR), Fourier-transform spectroscopy (FTIR), and ultraviolet-visible spectroscopy (UV-vis). The FTIR and NMR results showed that the copolymer synthesis was successful, and the copolymer contained spiropyran monomer. UV analyses indicated that the photoresponsive behavior of the copolymer in the protic and aprotic solvents was quite the opposite, and the polymer absorption spectrum in the basic aqueous solutions was red-shifted.