| 초록 |
To obtain end-on orientation of poly(3-alkylthiophene) (P3AT) where the main chains are vertically oriented on a substrate, amphiphilic diblock copolymers consisting of P3ATs were synthesized. We synthesized poly(3-dodecylthiophene)-block-poly(3-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)methylthiophene) copolymers (P3DDT-b-P3TEGT) using the GRIM method. P3DDT-b-P3TEGT showed well-ordered lamellar microdomains in bulk, verified by SAXS. The thin film morphology measured by AFM and GISAXS showed parallel oriented lamellar microdomains. Thus, both P3DDT and P3TEGT backbone chains were oriented perpendicularly to the lamellar layer, and the end-on orientation of P3DDT chains was obtained. P3DDT-b-P3TEGT film showed much improved hole mobility compared with neat P3DDT film. This indicates that end-on orientation is very effective for designing high performance vertically operating devices. |
