| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
대학원생 구두발표 (발표15분) |
| 제목 |
Transition of Solution Assembly Behaviors from Nanowires to Micelles Using Regioregularity-Controlled P3HT-b-P2VP Block Copolymers |
| 초록 |
In selective solvents, poly(3-hexylthiophene) (P3HT)-based block copolymers (BCPs) assemble into crystallized nanowire (NW) structures due to rigid P3HT blocks. Herein, we report the effect of the crystalline interactions of P3HT block on the self-assembled structure of P3HT-block-poly(2-vinylpyridine) copolymers in solvent by tuning the regioregularities (RRs) of P3HT. We synthesized a series of BCPs that had the same molecular weights but various RRs, ranging from 55 to 95%, and investigate their behavior in a binary solvent mixture. The well-defined NW structures were produced from BCP with high RR (95%). As decreasing RR, more flexible P3HT chains produced gradual increases in the width of NWs, from 12 to 24 nm. A morphological transition to spherical micelle structures was observed at 55% RR. The structural differences were visualized by incorporating Au nanoparticles, which locate at the interface of P3HT and P2VP blocks, onto NWs and imaging the resulting hybrid nanostructures. |
| 저자 |
김영권1, 김형준2, 김진성3, 윤홍석1, 박현정1, 한정훈1, 김범준1
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| 소속 |
1KAIST, 2Univ. of Massachusetts, 3Amherst |
| 키워드 |
P3HT; regioregularity; block copolymer; solution assembly; transition
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| E-Mail |
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