RESEARCH / A0224
A Glutamate-Enabled Proton Relay in a Bioinspired Cu4O4 Cubane Boosts Neutral Water Oxidation via Proton-Coupled Electron Transfer
Read the original paper · 10.1021/acs.inorgchem.5c04537 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Figure 1. (A) Bioinspired design strategy from the natural Mn4CaO5 cluster in PS II to the synthetic [Cu4O4] cluster catalyst. (B) Synthesis routes of the organic ligands of LGly and LGlu, and the corresponding copper complexes of Cu4(LGly)4 and Cu4(LGlu)4, with HRMS spectra confirming the formation of the tetranuclear complexes. (C) Normalized Cu K-edge XANES spectra and the corresponding Fourier-transform EXAFS profiles (D) of Cu4(LGly)4 and Cu4(LGlu)4 with fitting curves, benchmarked against Cu, Cu2O, and CuO standards.