Monodisperse particles of bifunctional periodic mesoporous organosilica

被引：40

作者：

Cho, Eun-Bum ^{[1
]}

Kim, Dukjoon ^{[1
]}

Jaroniec, Mietek ^{[2
]}

机构：

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

[2] Kent State Univ, Dept Chem, Kent, OH 44240 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 13期

关键词：

D O I：

10.1021/jp710772w

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：

Monodisperse particles of periodic mesoporous organosilica (PMO) with ethane- and phenylene-bridging groups were prepared using 1,2-bis(triethoxysilyl)ethane (BTEE) and 1,4-bis(triethoxysilyl)benzene (BTEB) organosilica precursors, and a Pluronic P123 poly(ethylene oxide)-poly(propylene oxide) -poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymer template under slightly acidic conditions. Highly ordered monodisperse particles having hexagonal mesostructure (p6mm) and coiled shape were obtained only for the BTEE/BTEB molar ratios between 70:30 and 60:40. The average external diameter of these coiled particles was about 2-3 mu m, whereas the diameter of mesopores present in these particles was about 7.4 nm.

引用

页码：4897 / 4902

页数：6

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