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

Yoshinori Takashima, Tomofumi Nakayama, Masahiko Miyauchi, Yoshinori Kawaguchi,Hiroyasu Yamaguchi, and Akira HaradaDepartment of Macromolecular Science, Graduate School of Science, Osaka University,Toyonaka, Osaka 560-0043(Received March 25, 2004; CL-040332)The copolymers of acrylamide and acrylamide with pendantazobenzene (AzBA–AAm) were prepared by radical polymer-ization. The association constants of trans-AzBA–AAm copoly-mers with -CD are larger than those of cis-AzBA–AAm co-polymers. The trans-AzBA–AAm guest copolymer was foundto form supramolecular gels with