The left picture shows the green color of Ru(bpy)
3
3+
. The right picture shows the red color of the reduced form Ru(bpy)
3
2+
, which also shows fluorescence.
By courtesy of T. Akagi.
![[Color of Ru -II-III-states]](Ru_ox_red.gif)
The left picture shows the green color of Ru(bpy)33+. The right picture shows the red color of the reduced form Ru(bpy)32+, which also shows fluorescence.