DESIGN AND SYNTHESIS OF SUPRAMOLECULAR POLYMERS USING SPECIFIC INTERMOLECULAR INTERACTIONS

我们制备了以环糊精作为聚轮烷环组分的新型超分子聚合物。聚乙烯、聚四氢呋喃、聚丁二烯、聚异戊二烯、聚异丁烯和聚酯已被用作聚轮烷的轴。环糊精不仅能与亲水性聚合物形成包合物，还能与疏水性聚合物形成包合物，形成结晶性化合物。在环糊精聚合物包合物的制备过程中，我们发现环糊精不仅可以在水溶液中形成配合物，而且可以在没有溶剂的情况下形成配合物。当聚合物与干燥的环糊精晶体在室温下混合时，x射线粉末形貌由笼型转变为通道型，表明环糊精形成通道以容纳聚合物链。

We have prepared new supramolecular polymers containing cyclodextrins as ring components for polyrotaxanes. Polyethylene, polytetrahydrofran, polybutadiene, polyisoprene, polyisobutylene, and polyesters have been used as axles for polyrotaxanes. Cyclodextrins have been found to form inclusion complexes not only with hydrophilic polymers but with hydrophobic polymers to give crystalline compounds. In the course of preparation of inclusion complexes of polymers with cyclodextrins, we found that cyclodextrins form complexes not only from aqueous solutions but without solvents. When polymers were mixed with dried cyclodextrin crystals at room temperature, the X-ray powder patterns showed changes from cage type to channel type, indicating that cyclodextrins form channels to accommodate polymer chains.