From these values a valence band energy EV = 2.1 V vs. NHE at pH 7 can be calculated as shown in Fig. . Photoluminescence (PL) and time resolved PL studies were carried out for the new hybrid materials CTF and Ru-CTF in the presence and absence of sodium persulfate as a sacrificial electron acceptor (SEA), as displayed in Fig. . The PL intensity of CTF at 450 nm showed a quenching of 14 % in presence of sodium persulfate indicating slow electron transfer from the CTF to the SEA. In sharp contrast, the Ru-CTF hybrid material showed a nearly complete PL quenching (>98 %), suppressing the exciton recombination (Fig. ) due to very fast electron transfer from the Ru center to the electronically excited CTF moiety. Time-resolved single photon counting (TCSPC) experiments (Fig. ; Table in the SI) show a similar decay kinetics lifetime of τ around 2 ns for CTF in the presence and absence of SEA, monitored at 450 nm, in agreement with the low capacity of excited state quenching by the SEA used here. On the other hand, the Ru-CTF PL decay is faster than our instrumental response and thus indicative of a charge separated state lifetime lower than 40 ps. The fact that the catalyst reacts faster than the SEA with the excited state is in line with some examples described earlier in the literature that are termed anti-biomimetic. The naming is based on the fact that the light excited chlorophyll in PSII interacts first with tyrosine (that can be considered as analogous to SEA) to generate a tyrosine radical cation that in turn reacts with the OEC (oxygen evolution catalyst) Mn cluster in the natural photosynthesis process.