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Preparation of Langmuir-Blodgett Film of Silica Coated Gold Nanoparticles  

Park, Minsung (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University)
Choi, Jaeyoo (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University)
Jung, Jaeyeon (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University)
Cheng, Jie (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University)
Hyun, Jinho (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University)
Publication Information
Journal of Adhesion and Interface / v.11, no.4, 2010 , pp. 144-148 More about this Journal
Abstract
It reports the surface modification of gold nanoparticles (AuNPs) by the synthesis of thin silica layer and the fabrication of AuNPs monolayer on the glass surface. AuNPs of 10 nm in diameter were prepared in aqueous solution. A silica layer was synthesized at the different concentration of tetraethlyorthosilicate for the control of silica layer thickness. Langmuir-Blodgett (LB) film was fabricated by dispersing AuNPs on the aqueous solution and raising a surface pressure up to a solid phase. The change of AuNPs' size was observed by the change of UV/Visible spectra. Atomic force microscopic images confirmed the reliable fabrication of AuNPs LB films.
Keywords
gold nanoparticles (AuNPs); silica coating; Langmuir-Blodgett (LB); surface modification; thin film;
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