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Photodriven water oxidation initiated by a surface bound chromophore-donor-catalyst assembly.

ABSTRACT: In photosynthesis, solar energy is used to produce solar fuels in the form of new chemical bonds. A critical step to mimic photosystem II (PS II), a key protein in nature's photosynthesis, for artificial photosynthesis is designing devices for efficient light-driven water oxidation. Here, we describe a single molecular assembly electrode that duplicates the key components of PSII. It consists of a polypyridyl light absorber, chemically linked to an intermediate electron donor, with a molecular-based water oxidation catalyst on a SnO₂/TiO₂ core/shell electrode. The synthetic device mimics PSII in achieving sustained, light-driven water oxidation catalysis. It highlights the value of the tyrosine-histidine pair in PSII in achieving efficient water oxidation catalysis in artificial photosynthetic devices.

SUBMITTER: Wang D

PROVIDER: S-EPMC8580115 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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Photodriven water oxidation initiated by a surface bound chromophore-donor-catalyst assembly.

Wang Degao D Xu Zihao Z Sheridan Matthew V MV Concepcion Javier J JJ Li Fei F Lian Tianquan T Meyer Thomas J TJ

Chemical science 20211011 43

In photosynthesis, solar energy is used to produce solar fuels in the form of new chemical bonds. A critical step to mimic photosystem II (PS II), a key protein in nature's photosynthesis, for artificial photosynthesis is designing devices for efficient light-driven water oxidation. Here, we describe a single molecular assembly electrode that duplicates the key components of PSII. It consists of a polypyridyl light absorber, chemically linked to an intermediate electron donor, with a molecular-b ...[more]

PMID: 34880995

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