Aromatic azo compounds are an important class of raw materials and are widely used in chemical industries. However, current synthetic methods have many disadvantages, which limit their practical utility. Here, we report a facile approach to prepare 1,2,3-triazole-contained conjugated porous polymers (CPPs; Ta-Ths) through click reaction of azide and terminal alkynes and employ the click-based CPPs for the first time as photocatalysts. By changing the structure of alkyne monomer, Ta-Ths with distinct optoelectronic properties are obtained to effectively catalyze the visible light-driven oxidative dehydrogenation of hydrazo aromatics. Moreover, the Ta-Ths show much higher catalytic activity as compared with previous homogeneous photocatalysts. The CPP that possesses better charge transfer efficiency and lower charge recombination rate was found to have more catalytic activity than the others. In addition, this protocol was demonstrated on a gram scale without any erosion of yield. Furthermore, the polymer photocatalyst has shown reliable recyclability with no significant loss in its catalytic activity.

中文翻译：

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通过点击化学进行光催化活性共轭多孔聚合物的水合芳烃多相脱氢

芳族偶氮化合物是重要的原材料类别，并广泛用于化学工业。然而，当前的合成方法具有许多缺点，这限制了它们的实用性。在这里，我们报道了一种通过叠氮化物和末端炔烃的点击反应制备1,2,3-三唑类共轭多孔聚合物（CPPs; Ta-Ths）的简便方法，并且首次将基于点击的CPPs用作光催化剂。通过改变炔烃单体的结构，获得具有独特光电性能的Ta-Ths，可以有效地催化可见光驱动的azo族芳香族化合物的氧化脱氢。而且，与以前的均相光催化剂相比，Ta-Ths显示出高得多的催化活性。发现具有更好的电荷转移效率和更低的电荷重组率的CPP具有比其他CPP更高的催化活性。另外，该方案以克为单位进行了证明，产量没有任何下降。此外，该聚合物光催化剂显示出可靠的可回收性，而其催化活性没有明显损失。