TY - JOUR
T1 - Using well-defined EOnMAm diblock amphiphilic copolymers as templates for synthesis of mesoporous silicas with different mesostructures
AU - Chan, Yi Tsu
AU - Lin, Hong Ping
AU - Mou, Chung Yuan
AU - Liu, Shiuh Tzung
N1 - Funding Information:
This work was supported by National Science Council, Taiwan, ROC for the financial support. Appendix A
PY - 2009/7/1
Y1 - 2009/7/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.micromeso.2009.04.019
DO - 10.1016/j.micromeso.2009.04.019
M3 - Article
AN - SCOPUS:65749093532
SN - 1387-1811
VL - 123
SP - 331
EP - 337
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
IS - 1-3
ER -