Bioinspired Assembly of Hierarchical Light‐Harvesting Architectures for Improved Photophosphorylation

Molecular assembly offers a bottom‐up way to construct biomimetic architectures with unique structures and properties. Although artificial photophosphorylation systems have long been developed, their microstructures have yet to achieve the sophisticated order and hierarchy of natural organisms. Here...

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Bibliographic Details
Published in:Advanced functional materials 2018-03, Vol.28 (13), p.n/a
Main Authors: Li, Guangle, Fei, Jinbo, Xu, Youqian, Li, Yue, Li, Junbai
Format: Article
Language:English
Subjects:
Adenosine triphosphate
Assembly
biomimetic synthesis
Biomimetics
Chemical energy
Energy conversion efficiency
hierarchical structures
layer‐by‐layer assembly
Light
light harvesting
Materials science
photophosphorylation
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Summary:Molecular assembly offers a bottom‐up way to construct biomimetic architectures with unique structures and properties. Although artificial photophosphorylation systems have long been developed, their microstructures have yet to achieve the sophisticated order and hierarchy of natural organisms. Herein, by utilizing principles in the natural plant leaves, it is shown that a biomimetic system with hierarchically ordered and compartmentalized structures, combining photosystem II (PSII) and adenosine triphosphate (ATP) synthase, can be obtained through template‐directed layer‐by‐layer assembly. Under light illumination, PSII in such a highly ordered light‐harvesting array, splits water to produce protons and electrons. Furthermore, a remarkable proton gradient is created across the covering ATP synthase‐reconstituted lipid membrane. As a consequence, highly efficient photophosphorylation is achieved. Outstandingly, the rate of ATP production in this hierarchical light‐harvesting architecture is enhanced 14 times, compared to that in the nature. This study paves a new way to assemble bioinspired systems with enhanced solar‐to‐chemical energy conversion efficiency. A hierarchical light‐harvesting architecture is constructed for remarkably enhanced photophosphorylation by template‐directed layer‐by‐layer assembly. The simple and efficient strategy paves a new route to fabricate biomimetic microreactors beyond nature and improve solar‐to‐chemical energy conversion.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201706557