Augmenting photosynthesis through facile AIEgen-chloroplast conjugation and efficient solar energy utilization
Augmenting photosynthesis through facile AIEgen-chloroplast conjugation and efficient solar energy utilization
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DOI：
10.1039/d1mh00012h
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发表时间：
2021-04-14
影响因子：
13.3
通讯作者：
Tang, Ben Zhong
中科院分区：
文献类型：
--
作者：
Bai, Haotian;Liu, Haixiang;Tang, Ben Zhong
光合作用被认为是维持地球生命的基础。光捕获是激活后续光化学反应的初始步骤。在光系统中，叶绿体是高等植物细胞光驱动的基本代谢工厂。然而，太阳辐射光谱与叶绿体吸收谱之间存在不完全匹配。光合色素很难充分利用太阳光的能量。在此，我们设计了两种新的具有活化烷基的聚集诱导发射（AIE）分子（TPE-PPO和TPA-TPO）。通过一个简单的无金属的“点击”反应，我们实现了与AIE发光团（AIEgens）的活叶绿体的实质性操作。由于AIEgens的物理性质相匹配，它可以收集有害紫外辐射（HUVR）和光合无效辐射（PIR），并将其转化为光合有效辐射（PAR）供叶绿体吸收。结果表明，AIEgen-叶绿体结合物具有较好的水裂解和电子分离能力。它促进了三磷酸腺苷（ATP）的产生，这是光合作用的重要产物。本研究为提高植物光合作用提供了一种有效的策略。
Photosynthesis is regarded as the foundation for sustaining life on our planet. Light-harvesting is the initial step that activates the subsequent photochemical reactions. In the photosystems, chloroplast is the basic light-driven metabolic factory of higher plant cells. However, there is an incomplete match between the solar radiation spectrum and absorption profile of chloroplasts. It is hard for the photosynthetic pigments to fully utilize the sunlight energy. Here, we designed two new aggregation-induced emission (AIE) molecules with activated alkyl groups (TPE-PPO and TPA-TPO). Via a facile metal-free "Click" reaction, we realized the substantial manipulation of live chloroplasts with the AIE luminogens (AIEgens). Owing to the matched photophysical properties, the AIEgens could harvest harmful ultraviolet radiation (HUVR) and photosynthetically inefficient radiation (PIR), and further convert them into photosynthetically active radiation (PAR) for chloroplast absorption. As a result, the conjugated AIEgen-chloroplast exhibited better capability of water splitting and electron separation. It promoted the generation of adenosine triphosphate (ATP), which is an important product of photosynthesis. This work provides an effective strategy for improving plant photosynthesis.