Abstract: The modification of the inner surface walls of mesoporous MCM-41 molecular sieves with γ-aminopropyl yielded amine groups functional MCM-41. Iron(Ⅲ)
2’2-bipyridine complex grafted onto the functional MCM-41 via the coordination of iron ion with grafted amine group. The complex functionalized MCM-41 was
characterized by XRD, N₂ sorption at 77K, and solid state diffuse reflectance UV-vis spectroscopy as well as cyclic voltammetry (CV). It has low crystalline
and the BET surface areas, pore volume and main pore diameters decreased shapely compared to MCM-41 because of the introduction of γ-aminopropyl and [Fe(bipy)₂]³⁺.
Furthermore, the spectra of UV-vis and CV studies suggested the nature and electroactivity of iron ion complex functionalized MCM-41 differed from iron ion complex impregnated MCM-41.

Key words: MCM-41 molecular sieves, γ-aminopropyl modified MCM-41, metal ion complex functionalized MCM-41