Quasi-Two-Dimensional Assembly of Bottlebrush Block Copolymers with Nanoparticles in Ultrathin Films: Combined Effect of Graft Asymmetry and Nanoparticle Size
| Autor: | Yaron Aviv, Javid Rzayev, Roy Shenhar, Uri Raviv, Lea Fink, Esra Altay |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanocomposite Polymers and Plastics business.industry media_common.quotation_subject Organic Chemistry Local organization Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Asymmetry 0104 chemical sciences Inorganic Chemistry Colloidal gold Materials Chemistry Copolymer Photonics 0210 nano-technology business media_common |
| Zdroj: | Macromolecules. 52:196-207 |
| ISSN: | 1520-5835 0024-9297 |
| Popis: | Block copolymer guided assembly of nanoparticles leads to the formation of nanocomposites with periodic arrangement of nanoparticles, which are important for applications such as photonic devices and sensors. However, linear block copolymers offer limited control over the internal arrangement of nanoparticles inside their hosting domains. In contrast, bottlebrush block copolymers possess unique architectural attributes that enable additional ways to control the local organization of nanoparticles. In this work, we studied the coassembly of 8 and 13 nm gold nanoparticles with three bottlebrush block copolymers differing in the asymmetry of their graft lengths. Assembly was performed in ultraconfined films, where it occurs quasi-two-dimensionally. Our results indicate that graft asymmetry could be used as an additional tool to enhance nanoparticle ordering by forcing them to localize at the center of the domain regardless of their size. This behavior is analyzed in terms of the influence of the graft asymme... |
| Databáze: | OpenAIRE |
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