Lead halide perovskites for photocatalytic organic synthesis
Lead halide perovskites for photocatalytic organic synthesis
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DOI：
10.1038/s41467-019-10634-x
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发表时间：
2019-06
影响因子：
16.6
通讯作者：
Xiaolin Zhu;Yixiong Lin;J. San Martin;Yue Sun;Dian Zhu;Yong Yan
中科院分区：
文献类型：
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作者：
Xiaolin Zhu;Yixiong Lin;J. San Martin;Yue Sun;Dian Zhu;Yong Yan
自然界能够通过光合作用，通过从二氧化碳和光开始的一系列C-C、C-O和C-N键形成反应，以化学键的形式储存太阳能。直接捕获太阳能用于有机合成是一种很有前途的方法。铅(铅)-卤化物钙钛矿太阳能电池的功率转换效率达到24.2%，使钙钛矿成为一种独特的太阳能捕获材料。我们认为，钙钛矿的光物理性质已经被证明用于光伏，也应该是感兴趣的光氧化还原有机合成。因为这两个应用的关键方面都依赖于电荷分离和转移。在这里，我们证明了钙钛矿纳米晶是基本有机反应的特殊候选光催化剂，例如C-C，C-N和C-O键的形成。CsPbBr3在有机溶剂中的稳定性和易于调节的带边获得了钙钛矿更广泛的有机底物激活范围。我们的低成本、易加工、高效、耐空气和带隙可调的钙钛矿材料可能会给有机化学带来新的突破。
Nature is capable of storing solar energy in chemical bonds via photosynthesis through a series of C–C, C–O and C–N bond-forming reactions starting from CO2and light. Direct capture of solar energy for organic synthesis is a promising approach. Lead (Pb)-halide perovskite solar cells reach 24.2% power conversion efficiency, rendering perovskite a unique type material for solar energy capture. We argue that photophysical properties of perovskites already proved for photovoltaics, also should be of interest in photoredox organic synthesis. Because the key aspects of these two applications are both relying on charge separation and transfer. Here we demonstrated that perovskites nanocrystals are exceptional candidates as photocatalysts for fundamental organic reactions, for example C–C, C–N and C–O bond-formations. Stability of CsPbBr3in organic solvents and ease-of-tuning their bandedges garner perovskite a wider scope of organic substrate activations. Our low-cost, easy-to-process, highly-efficient, air-tolerant and bandedge-tunable perovskites may bring new breakthrough in organic chemistry.