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• W4376131514 abstract "Amination of aryl chlorides by metallaphotocatalysis is highly desired but remains practically challenging. Meanwhile, relying on soluble noble-metal photocatalysts suffers from resource scarcity and structural instability which limit their practical application. Here in, a highly crystalline acetylene-based hydrazone-linked covalent organic framewok-1 (AC-COF-1) is reported that enables metallaphotocatalytic amination of aryl chlorides. The non-planar effect of hydrazone linkage and weak interlayer attraction of acetylene bond are minimized by intralayer hydrogen-bonding. As a result, the COF shows not only improved crystallinity and porosity, but also enhanced optical and electronic properties compared to a COF analog without hydrogen-bonding. Notably, dual AC-COF-1/Ni system affords CN coupling products from broad aryl chloride substrates in excellent yields (up to 99%) and good functional tolerance. Furthermore, AC-COF-1 is recoverable and reusable for seven times photocatalysis cycles. This report demonstrates simple approach to tune the structure-activity relationship in COFs at molecular level." @default.
• W4376131514 created "2023-05-12" @default.
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• W4376131514 date "2023-05-10" @default.
• W4376131514 modified "2023-10-17" @default.
• W4376131514 title "Metallaphotocatalytic Amination of Aryl Chlorides Enabled by Highly Crystalline Acetylene‐Based Hydrazone‐Linked Covalent Organic Frameworks" @default.
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• W4376131514 doi "https://doi.org/10.1002/smll.202303069" @default.
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