| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 I |
| 제목 |
Helical assembly of Au nanoparticles in 1D nanocylinders confirmed by 3D transmission electron microscopy |
| 초록 |
The superstructure of chiral plasmonic nanoparticles (NPs) has proper properties for chiroptical sensors, circular polarizers, and optical metamaterials. The helical structure of NP assembly could improve the optical chirality induced by destruction of symmetric structure with NPs closely packed in confined within the cylindrical assemblies. Here, we demonstrate the assembly of polystyrene (PS)-tethered Au NPs composed of zigzag array was reconstructed into a 3D image with various angles to precisely confirm the internal NPs symmetries. The number of NP layers and the packing structures are controlled by molecular weight of PS to influence the surface plasmon resonance properties of the assemblies. These assemblies were analyzed for the location and array of NPs by 3D transmission electron microscopy. This study presents a strategy for controlling the helical assembly and plasmon optical activity of NPs and predicting the correlation between nanostructure and chiroptical properties. |
| 저자 |
황준호1, Ke Wang2, Jiangping Xu2, Jintao Zhu2, 이은지1
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| 소속 |
1광주과학기술원, 2Huazhong Univ. of Science and Technology |
| 키워드 |
chiral plasmonic; helical structure; polystyrene-tethered Au NPs; cylindrical assemblies; 3D transmission electron tomography
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| E-Mail |
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