亚胺
光催化
共价键
材料科学
纳米技术
组合化学
纳米尺度
纳米载体
级联
有机合成
纳米颗粒
化学
催化作用
有机化学
色谱法
作者
Qun Guan,Lele Zhou,Yu‐Bin Dong
标识
DOI:10.1002/adtp.202100177
摘要
Abstract Photocatalysis is a powerful tool in modern organic synthesis, however, it has not been applied to the synthesis of covalent organic frameworks (COFs), even in synthetic cascade approaches. Herein, the construction of a series of imine‐linked COFs from benzyl ethers and aromatic amines via sequential visible‐light‐induced photocatalytic oxidation and imine condensation steps is reported. The synthesis is performed under ambient conditions and is readily expanded to the gram‐scale. This strategy results in imine‐linked COFs possessing a uniform particle size with regular spherical morphology which may be particularly suitable for biomedical applications. This is an improvement to the conventional solvothermal method which results in heterogenous particles. For example, RT‐COF‐1 synthesized in this work is a promising nanocarrier for loading lonidamine for selective tumor treatment via chemotherapy. It is believed that the concept of photocatalytic‐cascade COF synthesis expands the scope for imine‐linked COFs and significantly enriches the nanoscale COF synthetic methodology.
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