Covalent triazine skeletons (CTFs) are long-chain polymers with rigid hydrophobic aromatic skeletons and polar functional groups. Here, we selected three monomers to explore a series of stable CTFs (FCTFs, NCTFs, ClCTFs) with multiple active sites at 350 and 400 °C respectively, which can act as a porous platform for effective and reversible iodine capture. The iodine adsorption capacities of FCTF@350, NCTF@350, ClCTF@350, FCTF@400, NCTF@400 and ClCTF@400 are 285, 232, 231, 382, 372 and 340 wt%, respectively. Among them, the iodine capture capacities of FCTFs and NCTFs are higher than those of ClCTFs, which suggested that the introduction of electron-rich F and pyridine N groups can indeed improve the iodine adsorption capacity of the polymers. In addition, at 50 bar and 323 K, the CO₂ capture capacity of FCTF@350, NCTF@350, ClCTF@350, FCTF@400, NCTF@400 and ClCTF@400 are 631.6, 539.2, 496.6, 876.6, 783.3, and 695.4 mg g⁻¹, respectively. This shows that polymers have good applications in CO₂ capture.

共价三嗪骨架 (CTF) 是具有刚性疏水芳香骨架和极性官能团的长链聚合物。在这里，我们选择了三种单体来探索一系列分别在 350 和 400 °C 下具有多个活性位点的稳定 CTF（FCTF、NCTF、ClCTF），它们可以作为有效和可逆碘捕获的多孔平台。FCTF@350、NCTF@350、ClCTF@350、FCTF@400、NCTF@400和ClCTF@400的碘吸附容量分别为285、232、231、382、372和340 wt%。其中，FCTFs和NCTFs的碘捕获能力高于ClCTFs，这表明富电子F和吡啶N基团的引入确实可以提高聚合物的碘吸附能力。此外，在 50 bar 和 323 K 下，CO ₂FCTF @ 350，NCTF @ 350，ClCTF @ 350，FCTF @ 400，NCTF @ 400和ClCTF @ 400的捕获能力是631.6，539.2，496.6，876.6，783.3，和695.4毫克克^-1，分别。这表明聚合物在CO ₂捕获方面具有良好的应用。