Porous Polymer Films and Honeycomb Structures Made by the Self-Organization of Well-Defined Macromolecular Structures Created by Living Radical Polymerization Techniques

摘要

Macroporous polymers have become materials of high interest in recent years,because of their potential applications in diverse areas from membranes to medical devices.Star and block polymers are known to template around water droplets to form isoporous arrays.However,the utilization of this discovery has been severely restricted because the synthetic route used,anionic polymerization,is difficult an limited to a small number of (generally nonfunctional) monomers.A number of other synthetic routes to star polymers have become available in recent years,and the development of living radical polymerization provides a great opportunity to significantly broaden the range of functional materials.We have adopted both metal-mediated radical polymerization and reversible addition-fragmentation trasfer(RAFT) polymerization to synthesize star polymers for application in isoporous film an honeycomb-structure production.The porous structures are created form casting solutions of star polymers in an organic solvent onto a glass substrate under a humid atmosphere as described by Francois and co-workers.