Complex Formation and Gelation between Copolymers Containing Pendant Azobenzene Groups and Cyclodextrin Polymers

Abstract
The copolymers of acrylamide and acrylamide with pendant azobenzene (AzBA–AAm) were prepared by radical polymerization. The association constants of trans-AzBA–AAm copolymers with β-CD are larger than those of cis-AzBA–AAm copolymers. The trans-AzBA–AAm guest copolymer was found to form supramolecular gels with β-CD–pAA (pAA; poly(allylamine)) host copolymers in water.