Functionalization of mesoporous silica by condensation of tetramethoxysilane and alkyl peptidoamine monomers in the presence of a non-ionic fluorinated surfactant

2019/6/15

The functionalization of mesoporous silica materials with alkyl peptidoamines by the co-condensation method was investigated. Alkylpeptidoamines were introduced via aminopropyltriethoxysilane (APTES). Samples are prepareds by using a nonionsc fluorinated surfactant C8F17C2H4)9OH. Results obtained by SAXS clearly show that the channel arrangement of the recovered materials depends not only on the organosilane loading, but also on the nature of the functional groups. The efficiency of the functionalization was evidenced by FTIR and solid state 29Si MAS NMR spectroscopies. Results obtained from solid state 29Si NMR show that that polymerization rates of organosilane and Tetramethoxysilane (TMOS) must be very close to each other. We have also evidenced that the pore diameter is strongly affected by the nature of the functional group.