Designed Synthesis of a 2D Porphyrin‐Based sp²Carbon‐Conjugated Covalent Organic Framework for Heterogeneous Photocatalysis

The construction of stable covalent organic frameworks (COFs) for various applications is highly desirable. Herein, we report the synthesis of a novel two‐dimensional (2D) porphyrin‐based sp 2 carbon‐conjugated COF (Por‐sp 2 c‐COF), which adopts an eclipsed AA stacking structure with a Brunauer—Emmett—Teller surface area of 689 m 2 g −1 . Owing to the C=C linkages, Por‐sp 2 c‐COF shows a high chemical stability under various conditions, even...