| 초록 |
Fabrication of ordered structures from block copolymers of conjugated polymers has been very limited due to the strong rod-rod interactions between the conjugated blocks that inhibit the formation of ordered structures. Here, we developed a novel molecular design of conjugated polymer-based graft copolymers to control the rigidity of the copolymers and to produce a variety of ordered nanostructures. A series of well-defined poly(3-hexylthiophene)-graft-poly(2-vinylpyridine) (P3HT-g-P2VP) copolymers were prepared via controlled polymerization, followed by microwave-assisted click reaction. We observed that controlling the molecular weights (Mn) of the grafted P2VP chains allow us to regulate the rod-rod interaction of the copolymers systematically, thus, we produced the thermally-annealed, well-ordered non-fibril nanostructures of P3HT-based copolymers, including lamellae, hexagonally-packed cylinders, and spheres. |
