Ordered three-dimensional (3-D) Im-3m-type mesoporous organosilicas with large-pore sizes ( > 6 nm) have been prepared by an easy solvent evaporation method by using bridged silsesquioxane 1,2-bis(triethoxysilyl)ethane precursor and triblock copolymers as the structure-directing agents.
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Zhang et al. (2004) studied this question.
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