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

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)331-337
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume123
Issue number1-3
DOIs
Publication statusPublished - 2009 Jul 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Using well-defined EO<sub>n</sub>MA<sub>m</sub> diblock amphiphilic copolymers as templates for synthesis of mesoporous silicas with different mesostructures'. Together they form a unique fingerprint.

  • Cite this