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A Bioinspired Route to Various Siliceous Vesicular Structures

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Abstract:

Various siliceous nanostructures have been successfully synthesized through the co-organization of organic molecules and inorganic silica source under mild pH conditions (pH ∼ 5). A biodegradable block copolymer P123 [EO20PO70EO20, EO is poly (ethylene oxide), PO is poly (propylene oxide)] is employed as a marcomolecular template and Na2SiO3ยท9H2O as a silica source. By changing the concentrations of the reactants and/or reaction temperature, siliceous multilamellar vesicles, unilamellar nano-foams and multilamellar vesicles with sponge-like walls have been obtained. Our work provides a convenient and bioinspired route to obtain siliceous nanostructured materials with adjustable and multi-level pore structures as well as rich morphologies, which is important to understand the biomineralization mechanism. Such artificial silica nanoporous materials may find potential applications in catalysis, separations, electronics, and photonics, etc.

Keywords: BIOMINERALIZATION; BLOCK COPOLYMER; SELF ASSEMBLY; SILICA; VESICLE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.1731

Publication date: January 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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