Porous aromatic frameworks (PAFs) represent an important category of porous solids. PAFs possess rigid frameworks and exceptionally high surface areas, and, uniquely, they are constructed from carbon−carbon−bond−linked aromatic-based building units. Various functionalities can either originate from the intrinsic chemistry of their building units or are achieved by postmodification of the aromatic motifs using established reactions. Specially, the strong carbon−carbon bonding renders PAFs stable under harsh chemical treatments. Therefore, PAFs exhibit specificity in their chemistry and functionalities compared with conventional porous materials such as zeolites and metal organic frameworks. The unique features of PAFs render them being tolerant of severe environments and readily functionalized by harsh chemical treatments. The research field of PAFs has experienced rapid expansion over the past decade, and it is necessary to provide a comprehensive guide to the essential development of the field at this stage. Regarding research into PAFs, the synthesis, functionalization, and applications are the three most important topics. In this thematic review, the three topics are comprehensively explained and aptly exemplified to shed light on developments in the field. Current questions and a perspective outlook will be summarized.

中文翻译：

---

多孔芳香框架（PAF）。

多孔芳族骨架（PAF）代表了多孔固体的重要类别。PAF具有刚性框架和异常高的表面积，并且独特地，它们是由碳-碳-键连接的芳族基建筑单元构成的。各种功能可以源自其结构单元的内在化学，也可以通过使用已建立的反应对芳香基序进行后修饰来实现。特别地，强碳碳键使PAF在苛刻的化学处理下稳定。因此，与传统的多孔材料（例如沸石和金属有机骨架）相比，PAF在化学和功能上表现出特异性。PAF的独特功能使其可以耐受恶劣的环境，并且可以通过严格的化学处理使其功能化。在过去的十年中，PAFs的研究领域经历了快速的扩展，因此有必要在现阶段为该领域的基本发展提供全面的指导。关于PAF的研究，合成，功能化和应用是三个最重要的主题。在本主题审查中，对这三个主题进行了全面的解释并得到了适当的举例说明，以阐明该领域的发展。将总结当前的问题和观点展望。对这三个主题进行了全面的解释并适当地举例说明，以阐明该领域的发展。将总结当前的问题和观点展望。对这三个主题进行了全面的解释并适当地举例说明，以阐明该领域的发展。将总结当前的问题和观点展望。