Figure 4.
The immobilisation of chemical functionalities by both co-condensation and post synthetic functionalisation. Path (A) shows the direct synthetic co-condensation functionalisation by organo-substituted trialkoxysilanes on the surface of silica mesopores. Path (B) indicates the co-condensation process for periodic mesoporous organosilicas (PMOs), where bridged organosilanes (R’O)3Si-R-Si(OR’)3 and tetraalkoxysilanes are within the three-dimensional network structure of the silica matrix. Path (C) illustrates the post synthetic grafting of terminal trialkoxyorgnanosilanes.