Supra-Assembly of Siliceous Vesicles

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• 作者：Hongning Wang ; Xufeng Zhou ; Meihua Yu ; Yunhua Wang ; Lu Han ; Jun Zhang ; Pei Yuan ; Graeme Auchterlonie ; Jin Zou ; Chengzhong Yu
• 刊名：Journal of the American Chemical Society
• 出版年：2006
• 出版时间：December 20, 2006
• 年：2006
• 卷：128
• 期：50
• 页码：15992 - 15993
• 全文大小：171K
• 年卷期：v.128,no.50(December 20, 2006)
• ISSN：1520-5126

文摘

We report a new approach to produce macroporous (~110 nm in diameter) ordered siliceous foams (MOSF) by using block copolymers as templates in the absence of any organic cosolvent. The fine three-dimensional honeycomb structure of MOSF was determined by electron tomography. A formation mechanism of MOSF that spans from the atomic to macroscopic scale is proposed, which involves the cooperative self-assembly of unilamellar vesicles followed by the supra-assembly of vesicles. The fusion of soft vesicles finally leads to MOSF with well-ordered and defined honeycomb structures.