Appending anthracene units to [(bpy)2Ru(dpp)](2+) results in Ru(II) agents that exhibit dynamic photoreactivity towards DNA and protein. [(Anthbpy)(bpy)Ru(dpp)](2+) and [(Anthbpy)2Ru(dpp)](2+) are the first metal-organic Ru(II) agent with dpp ligands shown to photomodify DNA in the presence or absence of oxygen, while also binding protein in an oxygen-dependent manner.