Silicon (100) surfaces modified by osmium bipyridine complexes

Tethered osmium bypiridine-pyridine complexes [Os(bpy)₂Clpy-R] were prepared from chemically modified non-oxidized silicon (100) electrodes. Pyridinyl groups at the distal end of self-assembled monolayers (SAMs)-modified silicon surfaces were used to coordinatively bind a representative osmium bipyridil complex precursor [Os(bpy)₂Cl₂]. SAMs presenting the putative osmium ligand were prepared by a step-wise procedure using `click´ reactions of acetylene-terminated alkyl monolayers and isonicotinic acid azide derivatives. The redox properties of the modified Si(100) electrodes were characterized using cyclic voltammetry.