期刊
CATALYSTS
卷 10, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/catal10020185
关键词
photosystem II; water-splitting reaction; natural Mn4CaO5-cluster; artificial Mn4CaO4-cluster
资金
- National Key Research & Development Program of China [2017YFA0503704]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDA21010212, XDB17030600]
- National Natural Science Foundation of China [31770258, 91961203]
The oxygen-evolving center (OEC) in photosystem II (PSII) of plants, algae and cyanobacteria is a unique natural catalyst that splits water into electrons, protons and dioxygen. The crystallographic studies of PSII have revealed that the OEC is an asymmetric Mn4CaO5-cluster. The understanding of the structure-function relationship of this natural Mn4CaO5-cluster is impeded mainly due to the complexity of the protein environment and lack of a rational chemical model as a reference. Although it has been a great challenge for chemists to synthesize the OEC in the laboratory, significant advances have been achieved recently. Different artificial complexes have been reported, especially a series of artificial Mn4CaO4-clusters that closely mimic both the geometric and electronic structures of the OEC in PSII, which provides a structurally well-defined chemical model to investigate the structure-function relationship of the natural Mn4CaO5-cluster. The deep investigations on this artificial Mn4CaO4-cluster could provide new insights into the mechanism of the water-splitting reaction in natural photosynthesis and may help the development of efficient catalysts for the water-splitting reaction in artificial photosynthesis.
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