Lead-Halide Perovskites for Photocatalytic α-Alkylation of Aldehydes
Lead-Halide Perovskites for Photocatalytic α-Alkylation of Aldehydes
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DOI：
10.1021/jacs.8b08720
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发表时间：
2019-01-16
影响因子：
15
通讯作者：
Yan, Yong
中科院分区：
文献类型：
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作者：
Zhu, Xiaolin;Lin, Yixiong;Yan, Yong
在化学合成中，成本有效和高效的催化剂是非常需要的。在这里，我们证明了容易制备的APbBr（3）（A = Cs或甲基铵（MA））型钙钛矿胶体（约. 2-100 nm）可以选择性地光催化碳-碳键形成反应，即，α-烷基化具体而言，我们证明了醛的α-烷基化，在可见光照射下的营业额（TON）超过52，000。杂化有机/无机钙钛矿正在彻底改变光伏研究，现在正在影响其他研究领域，但它们在有机合成中的探索却很少。我们的低成本，易于加工，高效和带宽可调的钙钛矿光催化剂有望为化学合成带来新的见解。
Cost-effective and efficient photocatalysis are highly desirable in chemical synthesis. Here we demonstrate that readily prepared suspensions of APbBr(3) (A = Cs or methylammonium (MA)) type perovskite colloids (ca. 2-100 nm) can selectively photocatalyze carbon-carbon bond formation reactions, i.e., alpha-alkylations. Specifically, we demonstrate alpha-alkylation of aldehydes with a turnover number (TON) of over 52,000 under visible light illumination. Hybrid organic/inorganic perovskites are revolutionizing photovoltaic research and are now impacting other research fields, but their exploration in organic synthesis is rare. Our low-cost, easy-to-process, highly efficient and bandedge-tunable perovskite photocatalyst is expected to bring new insights in chemical synthesis.