“…Although their catalytic activity is low, it represents a breakthrough in the area by opening new possibilities as photocatalysts for water oxidation. In all examples described, the activity of the dyad is higher than the two separate components, a phenomenon ascribed to fast intramolecular electron transfer kinetics that allows to reach the needed active higher oxidation states of the catalyst [13,14]. However, all the examples above are based on As drawn, this reaction takes place in 100 % atom economy and it generates a sulfoxide, which is a highly added value product, using water and sunlight.…”