A PANI (polyaniline)-g-C₃N₄-TiO₂ composite was prepared and found to be efficient for radical C–H arylation reactions. The arylation process involved coupling of in situ generated aryl diazonium salts from aniline with heteroarenes, enol acetates or benzoquinones under visible light in aqueous medium or pure water. A broad range of substrates survived the reaction conditions to provide the desired products in moderate to good yields. Scale-up (10 mmol) synthesis was also achieved. This semiconductor photocatalyst showed good photocatalytic performance and stability. Recycle studies showed that this composite could be readily recovered and a slight decrease in the catalytic activity was observed after ten consecutive runs.

中文翻译：

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在水介质中可见光下，PANI-gC ₃ N ₄ -TiO ₂复合材料催化通过苯胺活化的CH芳基化反应

制备了聚苯胺（聚苯胺）-gC ₃ N ₄ -TiO ₂复合材料，发现它对自由基CHH芳基化反应有效。芳基化过程涉及在水性介质或纯水中在可见光下将苯胺的原位生成的芳基重氮盐与杂芳烃，烯醇乙酸酯或苯醌结合。各种各样的底物在反应条件下均能幸存，以中等至良好的产率提供所需的产物。还实现了放大（10 mmol）合成。该半导体光催化剂显示出良好的光催化性能和稳定性。循环研究表明，这种复合材料很容易被回收，连续十次运行后，催化活性略有下降。