| abstract |
The invention relates to aerogels containing functional residues of the formula (I)-Y-Z, wherein Y is a straight-chained or branched alkylene group with 1 to 22 carbon atoms; Z is halogen, pseudohalogen, SR<1>, PR<2>R<3>, colourant residue or metal complex residue; R<1> is H, a straight-chained or branched alkyl group with 1 to 22 carbon atoms or an aryl group with 4 to 10 carbon atoms; and R<2> and R<3> are identical or different, a straight-chained or branched alkyl group with 1 to 22 carbon atoms, or an aryl group with 4 to 10 carbon atoms. The aerogels are suitable, for example, as catalyst stayes and/or sensors. They can be obtained by metal alcoholates and metal alcoholates in which at least one alcoholate residue is replaced by the -Y-Z group being converted into a lyogel by hydrolysis and condensation, and subsequently being dried. |