Two-Dimensional Ordered Arrays of Silica Nanoparticles

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• 作者：Ce Wang ; Yahong Zhang ; Lin Dong ; Limin Fu ; Yubai Bai ; Tiejin Li ; Jigeng Xu ; and Yen Wei
• 刊名：Chemistry of Materials
• 出版年：2000
• 出版时间：December 2000
• 年：2000
• 卷：12
• 期：12
• 页码：3662 - 3666
• 全文大小：205K
• 年卷期：v.12,no.12(December 2000)
• ISSN：1520-5002

文摘

Nanosized silica particles of various diameters (40, 60, and 105 nm) with relatively narrowsize distributions were prepared via base-catalyzed sol-gel reactions of tetraethyl orthosilicate using a seeded-growth technique. These nanoparticles were organized into two-dimensional (2-D) monolayers by a solvent evaporation method. The particles of 60 nm orgreater in diameter could be assembled to 2-D crystals on a larger area because of lowerparticle size distribution. The arraying order was found to have little or no dependence onshape regularity of the nanoparticles, pH value, and type of the substrate, includingmicroslide, silicon wafer, and indium-tin oxide glass, used in this study.