| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Transition of solution assembly behaviors of block copolymer from semi-crystalline to coil via controlling region-regularity of poly(3-hexylthiophene) |
| 초록 |
Conjugated polymer-based block copolymers (BCPs) has been considered as attractive materials to achieve crystalline nanowire (NW) structures through solution assembly. However, the origin of assembly through NWs has not been deeply studied due to the lack of model systems. Herein, we investigate the effect of crystallinity of conjugated polymer on the NW formation by using systemically regio-regularity (RR) controlled poly(3-hexylthiophene) (P3HT) based BCP. A series of P3HT-block-poly(2-vinylpyridine) (P3HT-b-P2VP) copolymer was prepared with RR from 95 to 55%. When RR was under 80%, P3HT-b-P2VP produced an irregular NWs which have longer widths and show lower pi-pi stacking compared with conventional NWs, analyzed by TEM and GIWAXS. In addition, when RR was lower than 65%, P3HT-b-P2VPs was totally acted as coil-coil BCPs, resulting in formation of spherical micelle. Thus, we demonstrate nanostructures from amorphous micelle to crystalline NW can be tailored by RR of the P3HT. |
| 저자 |
김영권1, 박현정1, 김진성1, Kin Liao2, 김범준1
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| 소속 |
1KAIST, 2Khaifa Univ. |
| 키워드 |
P3HT; Nanowire; Block copolymer; solution assembly; regio-regularity
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| E-Mail |
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