Regarding the most challenging half-reaction of the WS process, which is represented from the light induced water oxidation reaction, there are a few examples based on independent discrete molecules in homogeneous phase that have been described using invariably [Ru(bpy)3] 2+ as light absorber in combination with a molecular water oxidation catalyst based on Ru and other transition metals. There are also examples of dyads , again based on [Ru(bpy)3] 2+ analogues, where the absorber and the catalyst are linked together via covalent bonds that have mainly been showing to work as a proof of principle systems with limited quantum efficiencies. Recently, transition metal-free polymeric organic absorbers such as carbon dots, Carbon nitrides (C3N4) and Covalent triazine-based frameworks (CTFs) have been developed that show promising properties for light to chemistry purposes. In particular, the CTF materials are interesting because they present a high degree of synthetic versatility, that in turn can provide a fine tuning of their photochemical properties. This allows preparing tailored CTF polymeric materials containing a dangling pyridyl group where a molecular catalyst can be covalently anchored. Herein, we report the synthesis and characterization of CTF based dyad containing Ru-tda (tda is [2,2':6',2''-terpyridine]-6,6''-dicarboxylic acid) water oxidation catalyst, Ru-CTF, which is capable of carrying out the light induced water oxidation reaction in an extremely efficient manner, achieving up to 220 catalytic cycles as well as 17 h -1 of max TOF using a modest catalyst concentration in the system.