A combination of nucleophilic aromatic substitution of fluorine by amino groups with a sol–gel process leads to the synthesis of organic-functionalized hybrid gels by a one-pot method based on silicates. The sol–gel reaction is catalyzed by hydrofluoric acid formed after addition of ethanol and water. The picture shows a selection of the dried gels.
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Spange et al. (2002) studied this question.
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