Uniform, Spherical Bridged Polysilsesquioxane Nano- and Microparticles by a Nonemulsion Method

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• 作者：Li-Chih Hu ; Mariya Khiterer ; Shing-Jong Huang ; Jerry Chun Chung Chan ; Joseph R. Davey ; Kenneth J. Shea
• 刊名：Chemistry of Materials
• 出版年：2010
• 出版时间：September 28, 2010
• 年：2010
• 卷：22
• 期：18
• 页码：5244-5250
• 全文大小：952K
• 年卷期：v.22,no.18(September 28, 2010)
• ISSN：1520-5002

文摘

A nonemulsion method to prepare spherical, monodisperse nanoparticles of bridged polysilsesquioxanes was developed. This is the first method to fabricate uniform spherical bridged polysilsesquioxanes from monomers with low to moderate hydrophilicity. The average particle size can be systematically controlled from 20 nm to 1.5 μm. These particles have distinctive properties that include porosity without templating and buffering capacity. A mechanism for particle growth is proposed.