Fabrication of gold dot, ring, and corpuscle arrays from block copolymer templates via a simple modification of surface energy
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- Fabrication of gold dot, ring, and corpuscle arrays from block copolymer templates via a simple modification of surface energy
- Cho, Heesook; Choi, Sinho; Kim, Jin Young; Park, Soojin
- 2-vinylpyridine; Block copolymer templates; Gold dot; Loading amount; Metal oxide film; Metal precursor; Micellar thin films; Nanostructured metals; Native oxides; O-xylene; Plasma treatment; Ring shaped structures; Silicon substrates; SIMPLE method; Simple modifications; Surface energies
- Issue Date
- ROYAL SOC CHEMISTRY
- NANOSCALE, v.3, no.12, pp.5007 - 5012
- We demonstrate a simple method for tuning the morphologies of as-spun micellar thin films by modifying the surface energy of silicon substrates. When a polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) copolymer dissolved in o-xylene was spin-coated onto a PS-modified surface, a dimple-type structure consisting of a thick PS shell and P2VP core was obtained. Subsequently, when the films were immersed in metal precursor solutions at certain periods of time and followed by plasma treatment, metal individual dots in a ring-shaped structure, metal nanoring, and metal corpuscle arrays were fabricated, depending on the loading amount of metal precursors. In contrast, when PS-b-P2VP films cast onto silicon substrates with a native oxide were used as templates, only metal dotted arrays were obtained. The combination of micellar thin film and surface energy modification offers an effective way to fabricate various nanostructured metal or metal oxide films.
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