| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Three-Dimensional Cubic (Im3m) Periodic Mesoporous Organosilicaswith Benzene- and Thiophene-Bridging Groups |
| 초록 |
Three-dimensional cubic (Im3m) periodic mesoporous organosilicas with aromatic benzene- and thiophene-bridging groups were synthesized successfully using 1,4-bis(triethoxysilyl)benzene and 2,5-bis(triethoxysilyl)thiophene as organosilica precursors in the presence of a F127 PEOPPOPEO 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 375-400oC) revealed their high surface area (460-630 m2 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 400oC, respectively) was confirmed by thermogravimetric analysis, while their framework chemistry was studied by solid-state 13C- and 29Si MAS NMR. |
| 저자 |
조은범1, 김덕준1, Mietek Jaroniec2
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| 소속 |
1성균관대, 2Kent State Univ. |
| 키워드 |
mesoporous organosilica; Im3m cubic structure; benzene-bridging group; thiophene-bridging group
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| E-Mail |
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