| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Solution Assembly Behaviors of Discrete Conjugated Oligo(3-hexylthiohene) Depending on Degree of Polymerization |
| 초록 |
We synthesized 5’’-bromo-3,4’,4’’-trihexyl-5-iodo-2,2’:5’,2’’-terthiophene (ter-3HT) and used ter-3HT as monomer to achieve poly(3-hexylthiophene) (P3HT) which have three repeating unit sequence through chain transfer polymerization. The isolated oligo(3-hexylthiophene)s (o3HTs) from hexamer to octodecamer (the degree of polymerization, DP = 6-18) were successfully obtained in one step purification through automated column chromatography. We could observe evolution of crystalline property depending on DP, particularly around DP = 10. Also o3HT over DP = 12 showed perfect edge-on orientation and well-ordered lattice like small molecules, indicating an oligomer separated from one polymer batch can act as a single molecule. Eventually, their self-assembly behaviors in anisole/dimethylforamide mixtures showed a transition boundary around DP = 10. We demonstrated the facile strategy to get o3HT and importance of molecular weight which can determine the crystal structures. |
| 저자 |
김영권1, Allison Abdilla2, 한정훈1, Craig J. Hawker2, 김범준1
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| 소속 |
1KAIST, 2UCSB |
| 키워드 |
P3HT; Solution assembly; Crystallinity; Molecular weight
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| E-Mail |
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