Porous Networks Assembled from Octaphenylsilsesquioxane Building Blocks

被引:67
作者
Kim, Yoonscob [1 ]
Koh, Kyoungmoo [1 ]
Roll, Mark F.
Laine, Richard M. [2 ]
Matzger, Adam J. [1 ]
机构
[1] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA
基金
美国国家科学基金会;
关键词
MOLECULAR-SIZE DISTRIBUTION; SURFACE-AREA; INTRINSIC MICROPOROSITY; NANOPOROUS POLYMERS;
D O I
10.1021/ma101597h
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Octaphenylsilsesquioxane (OPS) derivatives represent a class of high functionality building blocks with perfect three-dimensional symmetry for the construction of rigid and highly porous polymers. Copper-mediated in-situ homocoupling of an OPS derivative with eight para-disposed triple bonds yields a porous network with surface areas tip to 1000 m(2)/g. Introducing a monoalkyne capping agent to lower cross-linking density led to a similar to 200 m(2)/g increase in surface area. Exceptional thermal robustness of the silsesquioxane cage and strong covalent bonds resulting from the cross-linking process render the resulting porous networks stable to heat and water.
引用
收藏
页码:6995 / 7000
页数:6
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