Multidomain Helical Nanostructure by A(1)BA(2)C Tetrablock Terpolymer Self-Assembly
SCIE
SCOPUS
- Title
- Multidomain Helical Nanostructure by A(1)BA(2)C Tetrablock Terpolymer Self-Assembly
- Authors
- Yoon, Hyeongkeon; Ahn, Seonghyeon; Dong, Qingshu; Choi, Chungryong; Kim, Eunyoung; Li, Weihua; Kim, Jin Kon
- Date Issued
- 2021-09
- Publisher
- American Chemical Society
- Abstract
- Among many possible nanostructures in block copolymer self-assembly, helical nanostructures are particularly important because of potential applications for heterogeneous catalysts and plasmonic materials. In this work, we investigated, via small-angle X-ray scattering and transmission electron microscopy, the morphology of a polystyrene-block-polyisoprene-block-polystyrene-block-poly(2-vinylpyridine) (S1IS2V) tetra-block terpolymer. Very interestingly, when the volume fraction of each block was 0.685, 0.125, 0.060, and 0.130, respectively, a multidomain double-stranded helical nanostructure (MH2) was formed: P2VP chains became a core helix, and PI chains formed double-stranded helices surrounding the core helix. Core and double-stranded helices are connected by short PS2 chains, and PS1 chains become the matrix. The experimentally observed morphology is in good agreement with the prediction by self-consistent field theory. We believe that this multidomain helical structure will be pave the way to the creation of multifunctional helical structures for various applications such as metamaterials.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/109360
- DOI
- 10.1021/acsmacrolett.1c00459
- ISSN
- 2161-1653
- Article Type
- Article
- Citation
- ACS Macro Letters, vol. 10, no. 9, page. 1119 - 1124, 2021-09
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