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Title: Biomimetic Synthesis of Silica Films Directed by Polypeptide Brushes.
Authors: 國立臺灣師範大學化學系
J.-C. Wu
Y.-L. Wang
Chia-Chun Chen
Y.-C. Chang
Issue Date: 14-Oct-2008
Publisher: American Chemical Society
Abstract: Biomimetic porous silica films have been synthesized by polycondensation of tetraethoxysilane on a soft template formed by an “end-tethered poly(l-lysine)” (“t-PLL”) monolayer with a brushlike configuration. The silica formation occurs spontaneously inside the t-PLL at neutral pH and room temperature. The growth of silica fully conforms to the original t-PLL film thicknesses and lateral micropatterns, regardless of a prolonged reaction time and the monomer concentration. The morphologies of biomimetic silica are changed from continuous pleated, discrete spherical to fibrous forms according to the initial t-PLL chain length and surface density. After the t-PLL template is burned off, TEM images show the creation of nanochannel arrays in silica with an average diameter of 10 nm. Overall, our approach has provided a straightforward and environmentally friendly route to directly generate silica films with controllable morphology, thickness, and porosity.
ISSN: 0897-4756
Other Identifiers: ntnulib_tp_C0301_01_054
Appears in Collections:教師著作

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