Ulusoy-Ghobadi, Türkan GamzeYıldız, E. A.Büyüktemiz, M.Akbari, S. SadighTopkaya, D.İşçi, Ü.Dede, Y.Yağlioğlu, H. G.Karadaş, Ferdi2019-02-212019-02-2120181433-7851http://hdl.handle.net/11693/50372An entirely earth-abundant chromophore-relay water oxidation catalyst triad system, which is robust and efficient at neutral pH, is presented. The synthesis involves the coordination of a porphyrin derivative to a bridging Fe(CN)5 group, which is then reacted with Co ions to prepare a covalently linked chromophore-Prussian blue analogue assembly. Light-driven water oxidation studies in the presence of an electron scavenger indicate that the triad is active and it maintains a steady activity for at least three hours. Transient absorption experiments and computational studies reveal that the Fe(CN)5 group is more than a linker as it takes part in electron-transfer and co-operates with porphyrin in the charge separation process.EnglishDye-sensitizationPorphyrinsPrussian blueWater oxidationWater splittingArticle10.1002/anie.201811570