Synthesis of stimuli-responsive polymers by living cationic polymerization and their self-assemblies through ion complex formation

POLY 140

Yukari Oda, Tomohiro Tsujino, tsujino@chem.sci.osaka-u.ac.jp, Shokyoku Kanaoka, kanaoka@chem.sci.osaka-u.ac.jp, and Sadahito Aoshima, aoshima@chem.sci.osaka-u.ac.jp. Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
Various pH-responsive copolymers with pendant primary amino groups were synthesized by living cationic polymerization in the presence of an added base. The synthesis started with polymerization of a phthalimide-containing vinyl ether in CH2Cl2 in the presence of 1,4-dioxane at 0 ºC. The base-stabilized living system yielded nearly monodispersed polymers and their block copolymers. The formation of ion complex of the amino-containing polymers with several carboxy-containing polymers led to novel types of self-assemblies of tens to hundreds nm with narrow particle size distributions. These assemblies would take various forms in aqueous solution in response to multiple stimuli. Thus, we also examined the construction of a new class of self-assembling systems based on ion complex formation and multiple stimuli-responsive transitions using various functional polymers prepared by living cationic polymerization.
 

General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007