Synthesis of large-pore periodic mesoporous organosilica |
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Authors: | Yifan HuKun Qian Pei YuanYunhua Wang Chengzhong Yu |
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Affiliation: | a Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, 220 Handan Road, Shanghai 200433, PR Chinab Australian Institute for Bioengineering and Nanotechnology, the University of Queensland, QLD 4072, Australia |
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Abstract: | Periodic mesoporous organosilica (PMO) materials with large pores have been successfully synthesized using a combinational strategy by decreasing both the synthesis temperature and acidity. Herein, we use a tri-block copolymer EO106PO70EO106 Pluronic F127, where EO is poly(ethylene oxide) and PO is poly(propylene oxide)] as the template, bis(trimethoxysilyl)ethane (BTME) as a silica source and 1,3,5-trimethylbenzene (TMB) as a pore expander. The PMO material synthesized in this approach has a face-centered cubic (fcc) structure. When the synthesis temperature is 0 °C and the acidity is 0.1 M HCl, the pore diameter of the PMO material reaches 33.6 nm, which is the largest among cubic PMO materials to our knowledge. |
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Keywords: | Mesoporous Pore expansion Block copolymer Organosilica |
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