Synthesis and Photophysical/Electrochemical Investigation of Binuclear Ruthenium(II) Complexes with Potential Switchable Properties

Abstract

A series of macrocyclic ligands featuring poly-pyridyl functionalization and a disulfide linkage, along with their corresponding ruthenium(II) complexes, were synthesized and characterized. The diimine complexes were investigated in both the “open” (i.e. SMe derivatives) and 'closed' (i.e. S–S derivatives) forms. Comparative studies examined the effects of different substituents and ligand symmetry on electron/energy transfer capabilities, which are influenced by structural and conformational differences. Photophysical and electrochemical analyses revealed that some complexes exhibit properties suggesting their potential as molecular switches.