[Ru(bpy)2(ppz)] 2+ (ppz- 4'7'-phenanthrolino-5',6':5,6-pyrazine) is one of a group of compounds that exhibit enhanced reactivity upon exitation with visible light. In contrast to thermal reactivity, optical excitation enhances both acid-base and redox activity. This research focuses on characterizing the excited state acid-base properties of [Ru(bpy)2(ppz)] 2+ and whether the enhanced basicity translates into excited state coordination chemistry. Quenching of this excited complex by different metal ions capable of only coordination will be compared to that of metals capable of both coordination and electron transfer.