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Bioinspired Assembly of Hierarchical Light‐Harvesting Architectures for Improved Photophosphorylation
Author(s) -
Li Guangle,
Fei Jinbo,
Xu Youqian,
Li Yue,
Li Junbai
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201706557
Subject(s) - photophosphorylation , atp synthase , materials science , photosystem i , electrochemical gradient , electron transport chain , adenosine triphosphate , nanotechnology , hierarchical organization , proton transport , photosynthesis , photosystem ii , biophysics , chloroplast , membrane , chemistry , biology , biochemistry , management , economics , enzyme , gene
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.