Using well-defined EOnMAm diblock amphiphilic copolymers as templates for synthesis of mesoporous silicas with different mesostructures

Yi Tsu Chan, Hong Ping Lin, Chung Yuan Mou, Shiuh Tzung Liu

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

Highly ordered mesoporous silicas with large accessible pores have been prepared by using pre-synthesized poly(ethylene oxide)-b-poly(methyl acrlyate) (EOnMAm) diblock copolymers as templates. Via adjusting the chain length of EO versus that of MA, a series of silica mesostructures, including two-dimensional (2-D) hexagonal, 3-D bicontinuous (Ia3d), and body-centered cubic (Im3m) symmetries, were prepared with the use of tetraethyl-orthosilicate (TEOS) as the silica precursor under acidic conditions. The mesostructures of all materials were characterized by small-angle X-ray scattering and transmission electron microscopy measurements. N2 adsorption-desorption isotherms reveal that the pore size ranges from 4 to 30 nm with a narrow pore-size distribution and its dimension is proportional to the chain length of MA units.

原文English
頁(從 - 到)331-337
頁數7
期刊Microporous and Mesoporous Materials
123
發行號1-3
DOIs
出版狀態Published - 2009 七月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學
  • 材料力學

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