Synthesis and micellization of a multi-stimuli responsive block copolymer based on spiropyran†
Abstract
The multi-stimuli responsive block copolymer of poly(N-iso-propylacrylamide)-b-poly(N-acryloylglycine-co-N-acryloylglycine spiropyran ester) containing a LCST-type thermo-responsive poly(N-isopropylacrylamide) block and a pH-, light- and UCST-type multi-responsive poly(N-acryloylglycine-co-N-acryloylglycine spiropyran ester) block was synthesized by post-polymerization modification, and micellization modulated by UV light irradiation, temperature and pH was demonstrated.