Three-dimensional cubic (Im3m) periodic mesoporous organosilicas with benzene- and thiophene-bridging groups

被引：39

作者：

Cho, Eun-Bum ^{[1
]}

Kim, Dukjoon ^{[1
]}

Gorka, Joanna ^{[2
]}

Jaroniec, Mietek ^{[2
]}

机构：

[1] Sungkyunkwan Univ, Polymer Technol Inst, Dept Chem Engn, Suwon 440746, Gyeonggi Do, South Korea

[2] Kent State Univ, Dept Chem, Kent, OH 44242 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 14期

基金：

美国国家科学基金会;

关键词：

CAGE-LIKE PORES; CHANNEL WALLS; MESOPHASE CONTROL; HYBRID MATERIALS; ORGANIC GROUPS; SILICA; TRIBLOCK; SURFACTANT; COPOLYMER; FRAMEWORKS;

D O I：

10.1039/b817967k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three-dimensional cubic (Im3m) periodic mesoporous organosilicas with aromatic benzene- and thiophene-bridging groups were synthesized using 1,4-bis(triethoxysilyl) benzene and 2,5-bis(triethoxysilyl) thiophene as organosilica precursors in the presence of a F127 PEO-PPO-PEO triblock copolymer under acidic conditions. Highly ordered 3D cubic (Im3m) mesostructure was confirmed by synchrotron small angle X-ray scattering and transmission electron microscopy. Nitrogen adsorption analysis of the aforementioned samples (extracted and additionally calcined in nitrogen at 375-400 degrees C) revealed their high surface area (460-630 m(2) g(-1)) and accessible ordered large pores (in the range of 6-9 nm). High thermal stability of these benzene- and thiophene-PMO samples (up to 500 and 400 degrees C, respectively) was confirmed by thermogravimetric analysis, while their framework chemistry was studied by solid-state C-13 and Si-29 MAS NMR.

引用

页码：2076 / 2081

页数：6

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