Closing the Gap for Electronic Short‐Circuiting: Photosystem I Mixed Monolayers Enable Improved Anisotropic Electron Flow in Biophotovoltaic Devices,Angewandte Chemie International Edition

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Closing the Gap for Electronic Short‐Circuiting: Photosystem I Mixed Monolayers Enable Improved Anisotropic Electron Flow in Biophotovoltaic Devices
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-10-19 , DOI: 10.1002/anie.202008958
Panpan Wang ₁ , Anna Frank ₂ , Fangyuan Zhao ₁ , Julian Szczesny ₁ , João R C Junqueira ₁ , Sónia Zacarias ₃ , Adrian Ruff _{1,

4} , Marc M Nowaczyk ₂ , Inês A C Pereira ₃ , Matthias Rögner ₂ , Felipe Conzuelo ₁ , Wolfgang Schuhmann ₁

Affiliation

Well‐defined assemblies of photosynthetic protein complexes are required for an optimal performance of semi‐artificial energy conversion devices, capable of providing unidirectional electron flow when light‐harvesting proteins are interfaced with electrode surfaces. We present mixed photosystem I (PSI) monolayers constituted of native cyanobacterial PSI trimers in combination with isolated PSI monomers from the same organism. The resulting compact arrangement ensures a high density of photoactive protein complexes per unit area, providing the basis to effectively minimize short‐circuiting processes that typically limit the performance of PSI‐based bioelectrodes. The PSI film is further interfaced with redox polymers for optimal electron transfer, enabling highly efficient light‐induced photocurrent generation. Coupling of the photocathode with a [NiFeSe]‐hydrogenase confirms the possibility to realize light‐induced H₂ evolution.

中文翻译：

缩小电子短路的差距：光系统 I 混合单层膜可改善生物光伏器件中的各向异性电子流

半人工能量转换装置的最佳性能需要光合蛋白复合物的明确组装，当光捕获蛋白与电极表面接触时能够提供单向电子流。我们提出了混合光系统 I (PSI) 单层，由天然蓝藻 PSI 三聚体与来自同一生物体的分离 PSI 单体组合而成。由此产生的紧凑排列确保了每单位面积的光活性蛋白复合物的高密度，为有效地最小化通常限制 PSI 生物电极性能的短路过程提供了基础。PSI 薄膜进一步与氧化还原聚合物连接，以实现最佳的电子转移，从而实现高效的光诱导光电流生成。_{光电阴极与[NiFeSe]-氢化酶的耦合证实了实现光诱导H 2}析出的可能性。

更新日期：2020-10-19

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