| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
여성연구자 특별 심포지움 (일반구두발표(Post-Doc., 발표 20분) 및 대학원생 구두발표(발표 15분)만 신청 가능)* |
| 제목 |
Elucidating Helical Assembly of Au Nanoparticles Confined Nanochannels by Transmission Electron Microscopy Tomography |
| 초록 |
Although the gap distance between nanoparticles (NPs) and their uniformity in supramolecular assemblies affect the surface-enhanced Raman scattering (SERS), it is difficult to clearly explain the complex organization of NPs by conventional transmission electron microscopy (TEM). Here, we demonstrate the direct visualization of supramolecular assemblies of polystyrene-tethered gold NPs (AuNPs@PS) in anodic aluminum oxide (AAO) channels by using TEM tomography (TEMT). Two-layered zigzag packing of NPs observed from two cylindrical assemblies as a function of diameter of AAO channels actually had a completely different structures, which can be elucidated to two layered zigzag and three-layered double helical array of NPs by TEMT. This analysis can provide a strategy to design hybrid assemblies with controllable dimensionality to tune optical properties (e.g. SERS effect) of AuNPs and reduce the scientific errors in identifying the correlation between nanostructures and their functions. |
| 저자 |
진선미1, Ke Wang2, 김인혜1, Jintao Zhu2, 이은지3
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| 소속 |
1충남대, 2Huazhong Univ. of Science and Technology, 3광주과학기술원 |
| 키워드 |
confined assembly; polystyrene-tethered gold nanoparticles; hybrid assembly; AAO channels; TEM tomography
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| E-Mail |
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