Porous Siloxane-Organic Hybrid with Ultrahigh Surface Area through Simultaneous Polymerization-Destruction of Functionalized Cubic Siloxane Cages

被引:112
作者
Chaikittisilp, Watcharop [1 ]
Kubo, Masaru [1 ]
Moteki, Takahiko [1 ]
Sugawara-Narutaki, Ayae [1 ]
Shimojima, Atsushi [1 ]
Okubo, Tatsuya [1 ]
机构
[1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan
基金
日本学术振兴会;
关键词
HYDROGEN STORAGE; BUILDING-BLOCKS; SOL-GEL; POLYMERS; NETWORKS; OCTAVINYLSILSESQUIOXANE; DERIVATIVES; SEPARATION;
D O I
10.1021/ja2046556
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A novel hierarchically porous, hyper-cross-linked siloxane organic hybrid (PSN-5) has been synthesized by Friedel-Crafts self-condensation of benzyl chloride-terminated double-four-ring cubic siloxane cages as a singular molecular precursor. Simultaneous polymerization of the organic functional groups and destruction of the siloxane cages during synthesis yielded PSN-5, which has an ultrahigh BET surface area (similar to 2500 m(2) g(-1)) and large pore volume (similar to 3.3 cm(3) g(-1)) that to our knowledge are the highest values reported for siloxane-based materials. PSN-5 also shows a high H-2 uptake of 1.25 wt % at 77 K and 760 Torr.
引用
收藏
页码:13832 / 13835
页数:4
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