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Template-assisted self-assembly of diblock copolymer micelles for non-hexagonal arrays of Au nanoparticles
- Kim, Sung-Soo, Sohn, Byeong-Hyeok
- RSC advances 2016 v.6 no.47 pp. 41331-41339
- composite polymers, gold, micelles, nanogold, nanoparticles, oxygen, titanium dioxide
- We report the construction of non-hexagonal arrays of nanoparticles by the template-assisted self-assembly of polystyrene-block-poly(4-vinylpyridine) copolymer micelles. Diblock copolymers were spin-coated onto nanoscale TiO₂ templates, which successfully guided the placement of the micelles to form unconventional assemblies such as linear, zigzag, and Kagome array structures. These arrangements, different from the usual quasi-hexagonal arrays of copolymer micelles spin-coated onto a flat substrate, greatly depend on the physical dimensions of both the template and the micelles. Subsequent treatment of the copolymer micelle assemblies with oxygen plasma resulted in various non-hexagonal arrays of Au nanoparticles while preserving the arrangement of the original micelles on the template.