Bifunctional periodic mesoporous organosilica with large heterocyclic bridging groups and mercaptopropyl ligands

Bifunctional periodic mesoporous organosilicas with large heterocyclic bridging groups and mercaptopropyl surface ligands located on the pore walls are reported. These materials were synthesized by co-condensation of tris[3-(trimethoxysilyl)propyl] isocyanurate, 3-mercaptopropyltrimethoxysilane and tetraethyl orthosilicate in the presence of a block copolymer. They exhibit ordered and uniform mesopores with multifunctional groups of high adsorption affinity towards heavy metal ions such as mercury.