| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Mechanically-Robust Semiconducting Polymers with Regioregular-block-Regiorandom Poly(3-hexylthiophene) Copolymers |
| 초록 |
We develop mechanically-robust and high-performance organic thin-film transistors (OTFTs) based on poly(3-hexylthiophene) (P3HT) regioblock copolymers (block-P3HTs). They consist of regioregular (rre) and regiorandom (rra) P3HT where the crystalline rre block allows efficient charge transport while the amorphous rra block provide mechanical robustness. We prepare a series of block-P3HTs having different molecular weight (Mn) of rra blocks with the similar Mn of rre blocks. All the block-P3HTs exhibit high mobility due to the formation of well-developed edge-on crystallites from rre blocks confined within the rra domains. In addition, mechanical toughness of thin film can be significantly enhanced by the rra block. As increasing the Mn of rra block, the elongation at break and toughness improved by three order of magnitude than rre P3HT homopolymer. These studies provide strategies to improve mechanical properties of electroactive materials without degradation of electrical properties. |
| 저자 |
박현정1, 마부수1, 김진성1, 김영권1, 김선주2, 김택수1, 김범준1
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| 소속 |
1KAIST, 2중앙대 |
| 키워드 |
block copolymer; regioregularity; charge carrier mobility; flexibility
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| E-Mail |
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