| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자구조 및 물성: 극한물성소재 |
| 제목 |
Spatial Control of Au Nanoparticles within Block Copolymer Particles by the Length of Polymeric Ligand |
| 초록 |
Controlling the location of functional nanoparticles(NPs) within polymer particles 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 NPs. Here we show the dramatic location change of polystyrene (PS) coated gold nanoparticles (Au NPs) within polystyrene-block-poly(4-vinylpyridine)(PS-b-P4VP) block copolymer (BCP) based onion-like particles depending on the molecular weight of PS(Mn). For Mn=2.5k,the Au NPs were segregated at the surface of BCP particles. For Mn=6k, Au NPs were densely packed into PS domains. As for Mn=10k,most of the Au NPs were aggregated at the innermost part of the BCP particle while a few went into the PS domains. By varying the volume fraction of Au NPs and BCP,it was demonstrated that the Au NPs preferred to be located near the core of the particles rather than the outermost layer,which could be explained by the entropy loss variation of different parts within the BCP. |
| 저자 |
쉬멍1, 윤홍석1, Kin Liao2, 김범준1
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| 소속 |
1한국과학기술원, 2Khalifa Univerisity |
| 키워드 |
Spatial Control; Ligand Length; Hybrid Particle
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| E-Mail |
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