ABSTRACT

ABSTRACT The spectroscopic, photophysical, photochethical, and electrochemical

properties of two luminescent cage-type Ru(II)-polypyridine complexes, and of the mononuclear T-(bpy)3[Ru(bpy)2121-, dinuclear T-(bpy)3[Ru(bpy)2]24+ and trinuclear T-(bpy)3[Ru(bpy)2].3 6+ complexes have been examined and compared with those of related luminescent compounds; T-(bpy)3 is a trisbidentate aromatic ligand. The cage-type complexes are extremely stable towards ligand photodissociation and exhibit long excited state lifetime. For the polynuclear complexes the electronic interaction between the metal centers is very weak. Such complexes could be suitable systems to drive light induced multi-electron transfer processes.