Pattern formation of metal–oxide hybrid nanostructures via the self-assembly of di-block copolymer blends
- Title
- Pattern formation of metal–oxide hybrid nanostructures via the self-assembly of di-block copolymer blends
- Author
- 성기훈
- Keywords
- LITHOGRAPHY; GRAPHOEPITAXY; POLYMERS; ROUTE
- Issue Date
- 2019-10
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v. 11, no. 40, Page. 18559-18567
- Abstract
- The templated self-assembly of block copolymers (BCPs) with a high Flory-Huggins interaction parameter (chi) can effectively create ultrafine, well-ordered nanostructures in the range of 5-30 nm. However, the self-assembled BCP patterns remain limited to possible morphological geometries and materials. Here, we introduce a novel and useful self-assembly method of di-BCP blends capable of generating diverse hybrid nanostructures consisting of oxide and metal materials through the rapid microphase separation of A-B/B-C BCP blends. We successfully obtained various hybridized BCP morphologies which cannot be acquired from a single di-BCP, such as hexagonally arranged hybrid dot and dot-in-hole patterns by controlling the mixing ratios of the solvents with a binary solvent annealing process. Furthermore, we demonstrate how the binary solvent vapor annealing process can provide a wide range of pattern geometries to di-BCP blends, showing a well-defined spontaneous one-to-one accommodation in dot-in-hole nanostructures. Specifically, we show clearly how the self-assembled BCPs can be functionalized via selective reduction and/or an oxidation process, resulting in the excellent positioning of confined silica nanodots into each nanospace of a Pt mesh. These results suggest a new method to achieve the pattern formation of more diverse and complex hybrid nanostructures using various blended BCPs.
- URI
- https://pubs.rsc.org/en/content/articlelanding/2019/NR/C9NR04038Bhttps://repository.hanyang.ac.kr/handle/20.500.11754/152122
- ISSN
- 2040-3364; 2040-3372
- DOI
- 10.1039/c9nr04038b
- Appears in Collections:
- GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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