| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
The Polymeric Ligand Length Directed Location Control of Au Nanoparticles within Onion-like Block Copolymer Particles |
| 초록 |
Controlling the spatial alignment of inorganic nanoparticles (NPs) within polymer matrix is of great importance since it opens up a vast range of hybrid materials. One of the most common approaches is tuning the property of ligands of inorganic NPs. Here we show the dramatic location change of polystyrene (PS) coated gold nanoparticles (Au NPs) within onion-like polystyrene-block-poly4-vinylpyridine (PS-b-P4VP) block copolymer (BCP) particles depending on the molecular weight of PS ligands. For 2000g/mol PS ligands coated Au NPs (Au@2k PS), they located at the surface of BCP particles. For 6000g/mol PS ligands coated Au NPs (Au@6k PS), they densely packed into PS domains in the form of layers. By varying the volume fraction of Au NPs, it was showed that the Au@6k PS preferred to locate at relatively inner parts of the particles where the entropic penalty is severe. The results imply that the difference of Au NP locations arises from the entropic effect. |
| 저자 |
쉬멍1, 윤홍석1, Kin Liao2, 김범준1
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| 소속 |
1한국과학기술원, 2Khalifa Univ. |
| 키워드 |
Spatial Control; Ligand Length; Hybrid Particle
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| E-Mail |
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