fig9

Figure 9. (A) The P₂O₅-catalyzed dehydration condensation for the synthesis of pCTF-1; (B) The crystal structure of pCTF-1; (C) The synthetic strategy of crystalline CTFs by H₆P₄O₁₃; (D-G) PXRD patterns of different as-synthesized CTFs; (H) N₂ sorption isotherms at 77 K and (I) pore size distributions of four CTFs; (J) The large-scale preparation of CTF-DCB. (A and B) Adapted with permission^[114]. Copyright 2018, John Wiley and Sons. (C-J) Adapted with permission^[116]. Copyright 2022, John Wiley and Sons. TA: Terephthalamide; DCB: 1,4-dicyanobenzene; CTF: covalent triazine framework; TCB: 1,3,5-tris(N-carbazolyl)benzene; PXRD: powder X-ray diffraction.