| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Hierarchical Self-Assembly of Aromatic Amphiphiles into Fibers, Ribbons and Twisted Ribbons |
| 초록 |
The aromatic amphiphiles consisting of a laterally extended aromatic segment and different lengths of PEO coils self assemble into nanofibers with a bilayer packing in ethyl ether solution. Remarkably, the elementary fibers were observed to further aggregate laterally to form well-defined ribbons with solvent exchange of ethyl ether into methanol. Decreasing the PEO length enforces the flat ribbons to be curved to form twisted ribbons with a regular pitch along their axis due to steric constraints caused by enhanced hydrophobic and π-π stacking interactions between aromatic segments. Consequently, the incorporation of a laterally extended aromatic segment into an amphiphilic molecule provides a unique strategy for hierarchical formation from elementary fibers to nanoribbons with a tunable twist through enhanced lateral interactions between elementary structures. |
| 저자 |
이은지1, 이명수2
|
| 소속 |
1연세대, 2연세대 화학과 |
| 키워드 |
Fiber; Ribbon; Twisted Ribbon
|
| E-Mail |
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