Fabrication of Au/Titania Composite Nanodot Arrays from Au-Loaded Block Copolymer Micellar Films
✍ Scribed by Xue Li; Petra Göring; Eckhard Pippel; Martin Steinhart; Dong Ha Kim; Wolfgang Knoll
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 314 KB
- Volume
- 26
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Summary: A simple route to an ordered array of metal/semiconductor oxide composite nanodots is presented. Micellar monolayer films of polystyrene‐block‐poly(2‐vinyl pyridine) (PS‐b‐P2VP) loaded with HAuCl~4~ in the P2VP nanodomains are used as templates. TiO~2~ is generated selectively within the polar P2VP domains of PS‐b‐P2VP/HAuCl~4~ films by chemical vapor deposition of TiCl~4~. Subsequent removal of the organic matrix by oxygen plasma or UV light leads to an array of Au/TiO~2~ composite nanoparticles on the substrate surface.
Schematic illustration of the process to fabricate an array of Au/titania composite nanodots.
magnified imageSchematic illustration of the process to fabricate an array of Au/titania composite nanodots.