Abstract Modification of silica with viologenic groups is described. N, N′-Diallyl-γ, γ′- dipyridinium dibromide obtained by the reaction of allyl bromide with γ, γ′-dipyridyl was hydrosilylated with triethoxysilane followed by copolycondensation of the synthesized bis (3- triethoxysilylpropyl)-γ, γ′-dipyridinium dibromide with tetraethoxysilane.
