| 학회 |
한국화학공학회 |
| 학술대회 |
2001년 가을 (10/19 ~ 10/20, 한밭대학교) |
| 권호 |
7권 2호, p.4687 |
| 발표분야 |
재료 |
| 제목 |
셀프어셈블 유기초분자의 나노구조 |
| 초록 |
We investigate new examples of hexagonal columnar, cubic and frustrated smectic thermotropic liquid crystalline phases. The micro-structure and morphology of these side chain (various amphiphilic and dendrimeric) and main chain liquid crystalline polymers are studied, based on investigation of textures and defects using high resolution electron microscopy and diffraction (ED + XRD) methods. The phase symmetry, dimension and local structure of the amphiphilic and dendrimeric molecules have been clearly determined by controlling the orientation of the columnar mesophase by surface condition, so that both homeotropic and planar ordering of columns have been achieved. Low surface energy planes are identified through examination of the morphology of ultrathin films, which contain holes or terraces on a free surface. The stiffness of such columns could be evaluated, both quantitatively and qualitatively, based on examination of the planar texture, and of the defects contained therein. A cubic mesophase has been identified, and comprises spherical assemblies of dendrimeric molecules. Comparison with x-ray and modeling experiments are made. |
| 저자 |
정희태1, 김상욱2, 윤동기, 고영관, Hudson, S.D.
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| 소속 |
1한국과학기술원 화학공학과, 2Case Western Reserve Univ. |
| 키워드 |
nanostructure; supramolecule; self-assembly; dendrimer
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
