An Artificial antenna complex containing four Ru2+(bpy)3 - type chromophores as light-harvesting components and a Ru(bpy)(CN)4 2- subunit as the energy trap. A structural motif which resembles the natural photosynthetic systems.

A cyclam subunit bearing four light harvesting Ru(bpy)3 2+ - type species is connected to a Ru(II) compound having low lying excited states (energy traps) by hydrogen bonding: the light absorbed by the light-harvesting elements is funnelled to the energy trap with high efficiency.