| 초록 |
Well-defined brush block copolymers(BBCPs) have attracted research interest in recent years because of their unusual topology, conformation, and chain dimension. In spite of their extreme molecular weights(＞1 MDa), these BBCPs exhibit excellent dynamics in condensed phases arising from their low chain entanglement. Here we report the synthesis of diblock copolymers containing poly(ethylene glycol)s and polystyrenes as brushes tethered to the polynorbornene backbone. The resulting megaamphiphiles self-assembled into a variety of micellar and vesicular structures. Also, striking morphological diversity was exhibited, which presumably arises from the high molecular weight of megaamphiphiles and fast chain dynamics. Our results suggest that the periodic nanostructures having large periodicity in three-dimension could be created by simple solution self-assembly of megaamphiphiles. Furthermore, the correlation of molecular weight of BBCPs with lattice periodicity was investigated. |
