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有门的消耗性动态的人工光合成模型系统

Chen Wang¹, Zhixin Zhou¹, Yu Ouyang¹

¹Institute of Chemistry, The Minerva Center for Bio-hybrid Complex Systems, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.

Journal of the American Chemical Society

|August 2, 2021

概括

这项研究介绍了封闭的消耗性人造光合作用系统. 这些系统使用光化学模块来模仿光合作用,提供对过度光线的保护,并最大限度地减少光损伤.

科学领域:

人工光合作用的人工光合作用
超分子化学超分子化学
摄影化学的使用.

背景情况:

人工光合作用系统旨在模仿自然光合作用以转化能量.
了解和控制动态环境影响对于系统的稳定性和效率至关重要.
消散过程是人工系统中维持非平衡状态的关键.

研究的目的:

开发封闭的消耗性人工光合作用系统.
在人工光合作用装置上模拟动态调节的环境影响.
通过受控的电子转移来证明对光损伤的保护.

主要方法:

使用超分子双重架构构建两个光化学系统.
纳入光敏化剂 (Zn(II,原氨酸IX或氨酸) 和电子受体 (V2+).
使用酶 (Nt.BbvCI) 和燃料链来激活过渡电子转移.
在NADPH合成中使用牺牲电子捐赠者和酶级联 (ferredoxin-NADP+减少酶,NADP+).
应用抑制剂到门光诱导的电子转移.

主要成果:

由光化学模块驱动的被证明是短暂的类似光合作用过程.
观察到二甲基 (V·+) 的短暂积累和耗尽.
实现了NADPH的动态调节的光合作用.
通过使用抑制剂成功关闭了短暂的光诱导电子转移.

结论:

封闭式消散过程提供了一条保护人工光合作用模块免受光损伤的途径.
在这些人工系统中,可以实现对环境影响的动态调制.
开发的系统显示了强大而稳定的人工光合作用的潜力.

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