| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-고분자 |
| 제목 |
Importance of Polymer Ligand Conformation to the Confined Assembly Behavior of Block Copolymers and Polymer-Grafted Nanoparticles |
| 초록 |
Assembly of hybrid materials with well-defined morphologies is important to design complex nanomaterials. Here we show a design of entropy-driven particle assemblies with polystyrene-grafted Au nanoparticles (Au@PS) within onion-like polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) block copolymer (BCP) particles. Four parameters are investigated: molecular weight (N) and grafting density of PS ligands, core size of Au@PS, and Mn of PS blocks (P). We observed transitions of hybrid particles from alternate-layered onions to crusted onions by controlling these parameters. A modified swelling ratio (P/NSDPB) is proposed by considering the ligands in semi-dilute polymer brush (SDPB) regime as the only brushes available for interfacial interactions with BCPs. The modified parameter successfully explains structural transitions. The findings well demonstrated the importance of ligand conformation to the entropic interactions between block copolymers and grafted polymers. |
| 저자 |
권승호1, Meng Xu1, 윤홍석2, 김범준1
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| 소속 |
1KAIST, 2한양대 |
| 키워드 |
confined assembly; polymer ligand; conformation
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| E-Mail |
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