Supra-assembly of siliceous vesicles |
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| Authors: | Wang Hongning Zhou Xufeng Yu Meihua Wang Yunhua Han Lu Zhang Jun Yuan Pei Auchterlonie Graeme Zou Jin Yu Chengzhong |
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| Institution: | Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, PR China. |
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| Abstract: | We report a new approach to produce macroporous ( approximately 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. |
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