| 초록 |
Solution assembly of conjugated polymer based rod-coil copolymers can provide an effective means to produce nanowire (NW) structures. Herein, we investigate the effect of architectural design of corona blocks on the NW formation by using rod-coil “graft” copolymers. A series of poly(3-hexylthiophene)-graft-poly(2-vinylpyridine) (P3HT-g-P2VP) copolymer was prepared with two controlled architectural parameters: grafting fraction (fg) and molecular weight of P2VP (Mn,P2VP). Grafting P2VP chains gave rise to a steric hindrance and stretching penalty during crystallization, leading to the distinctive structure of NWs, in which their lengths and degree of curvatures were regulated depending on fg and Mn, P2VP. In particular, the fg affected the crystallinity and self-assembly behaviors. Therefore, we demonstrate that graft architectures of the conjugated rod–coil copolymers can provide a promising tailorbility in the solution–assembled nanostructures suitable for various applications. |
