Comparison of 3-aminopropylsilane linked to MCM-41- and HMS-type silicas synthesised under biphasic and monophasic conditions.

摘要

Functionalised mesoporous silicas prepared by either grafting by silylation of MCM-41or by self-assembly co-condensation of organically functionalised silica precursors andsilica precursor (RO)_4 Si in presence of non-ionic surfactants feature different properties. Materials were characterised by N2 sorption isotherms, FTIR and MAS-NMR. Imine formation during contacting the different samples with probes such as acetone andbenzaldehyde demonstrated different environments of the anchored amine groups.