Ruthenium phthalocyanines bearing pyridine-4-carboxaldehyde as an axial lig
and were synthesized. The carboxaldehyde group of the apical ligand pointin
g out from the phthalocyanine ring was used to link the complex to chemical
ly modified surfaces. The resulting monolayer was characterized by ellipsom
etry, IRRAS, XPS, X-ray reflectivity, and SPM. The grafting of RuPc to the
surface is stable.