A method for the preparation of transparent mesoporous silica sol–gel monoliths containing grafted organic functional groups
نویسندگان
چکیده
Transparent, crack-free mesoporous silica sol–gel monolith 2 was prepared from the hydrolysis of Si(OMe)4 in MeOH containing ethylene glycol (HOCH2CH2OH). Gradual exposure of the product monolith 1 to MeOH/H2O and then H2O helps prevent cracking of the monolith. Direct reaction of chelating diamine H2N(CH2)2NH(CH2)3Si(OMe)3 with 1 gave diamine-grafted monolith 3. Imprint-grafting of monolith 1 with the Cu complex Cu[H2N(CH2)3Si(OMe)3]4 2+
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