Two-dimensional conjugated covalent organic framework (COF) materials, such as based on 1, 4, 5, 8, 9, 12-hexaazatriphenylene (HAT), are gaining prominence in the field of photocatalytic selective organic transformations. This study focused on the application of in the full-solar-spectrum photocatalytic selective oxidation coupling of benzylamine derivatives. The crystalline , characterized by a narrow energy band gap (1.09 eV), a broad visible light absorption range (200–1600 nm), and excellent charge separation capability, exhibited significant potential for this transformation. Utilizing oxygen as the oxidizing radical species, the photocatalytic system achieved near-complete conversion (86–99 %) and high selectivity for ten substrates at room temperature, resulting in the formation of imine adducts. The study highlights the exceptional functional group compatibility and tolerance of the COF-based heterogeneous photocatalytic system. Notably, the photocatalyst demonstrated excellent recyclability, maintaining its catalytic efficiency over five consecutive cycles. These findings underscore the unique and efficient platform that crystalline provides for selective organic transformations via photocatalysis under mild conditions.

中文翻译：

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富氮共轭共价有机骨架上苯甲胺的全太阳光谱吸收光催化选择性氧化偶联

二维共轭共价有机骨架（COF）材料，例如基于1,4,5,8,9,12-六氮杂苯并菲（HAT）的材料，在光催化选择性有机转化领域越来越受到重视。本研究重点关注其在全太阳光谱光催化选择性氧化偶联苄胺衍生物中的应用。该晶体具有窄能带隙（1.09 eV）、宽可见光吸收范围（200-1600 nm）和优异的电荷分离能力，表现出这种转变的巨大潜力。利用氧作为氧化自由基物种，光催化系统在室温下实现了近乎完全的转化（86-99％）和对十种底物的高选择性，从而形成亚胺加合物。该研究强调了基于 COF 的异质光催化系统卓越的官能团兼容性和耐受性。值得注意的是，该光催化剂表现出优异的可回收性，在连续五个循环中保持其催化效率。这些发现强调了晶体为在温和条件下通过光催化进行选择性有机转化提供了独特而有效的平台。