| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Entropy-Driven Assembly Behavior of Nanoparticles within Emulsion-Evaporative Block Copolymer Particles |
| 초록 |
Controlling the spatial alignment of inorganic nanoparticles (NPs) within the polymer matrix is of great importance due to its great potential. Herein, we demonstrate the spatial distribution tuning of polystyrene-grafted Au NPs (Au@PS) within lamella forming polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) particles. Spatial distributions of Au@PS showed a strong dependence on the various entropy-related parameters, including the molecular weight ratio between the polymer matrix to the ligand, the core size of Au NPs, the grafting density of Au@PS. The hybrid particles with weak entropic interactions between Au@PS and polymer matrix showed a "crusted onion" structure with Au@PS forming hexagonal packing on the particle surface. In contrast, Au@PS stacked within inner PS domains in hybrid particles with strong entropic interactions. The phenomena will be explained by considering the interdigitations between matrix chains and PS ligands on the Au NP surface. |
| 저자 |
쉬멍1, 윤홍석2, Kin Liao3, 김범준1
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| 소속 |
1한국과학기술원, 2한국과하기술원, 3Khalifa Univ. |
| 키워드 |
entropy; polymer-grafted nanoparticle; assembly
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| E-Mail |
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