SYNTHESIS AND CHARACTERIZATION OF COBALT-COMPLEX FUNCTIONALIZED MCM-41

Silanation of the internal pore surface of the mesoporous molecular si eve MCM-41 (40 Angstrom) has yielded ethylenediamine (ED), diethylenet riamine (DET); and ethylenediaminetriacetic acid salt (EDT) functional ized sites. These grafted ligands were used for the preparation of cob alt(II) complexes covalently bound to the MCM-41 support. These materi als were characterized by SEM, UV-vis, FTIR, ESR, and cyclic voltammet ry as well as elemental analysis. Preliminary studies suggest the form ation of a reversible cobalt-oxygen adduct with MCM-41 grafted ED and DET. The nature and reactivity of the MCM-41 bound complexes were foun d to differ significantly from functionalized amorphous silica.