Proton-conducting materials are essential to the emerging hydrogen economy. Covalent triazine frameworks (CTFs) are promising proton-conducting materials at high temperatures but need more effective sites to strengthen interaction for proton carriers. However, their construction and design in a concise condition are still challenges. Herein, we show a low temperature approach to synthesize CTFs via a direct cyclotrimerization of aromatic aldehyde using ammonium iodide as facile nitrogen source. Among the CTFs, the perfluorinated CTF (CTF-TF) was successfully synthesized with much lower temperature ( ≤ 160 °C) and open-air atmosphere. Due to the additional hydrogen-bonding interaction between fluorine atoms and proton carriers (H₃PO₄), the CTF-TF achieves a proton conductivity of 1.82 × 10⁻¹S cm⁻¹ at 150 °C after H₃PO₄ loading. Moreover, the CTF-TF can be readily integrated into mixed matrix membranes, displaying high proton conduction abilities and good mechanical strength. This work provides an alternative strategy for rational design of proton conducting media.

质子传导材料对于新兴的氢经济至关重要。共价三嗪骨架（CTF）是有前途的高温质子传导材料，但需要更有效的位点来加强质子载流子的相互作用。然而，它们的构造和设计在简洁的情况下仍然是挑战。在此，我们展示了一种使用碘化铵作为简单氮源通过芳香醛直接环三聚来合成 CTF 的低温方法。在CTF中，全氟化CTF（CTF-TF）是在更低的温度（≤160℃）和露天气氛下成功合成的。由于氟原子和质子载体（H ₃ PO ₄ ）之间额外的氢键相互作用，CTF-TF在负载H ₃ PO ₄后在150℃下实现了1.82×10 ^-1 S cm ^-1的质子电导率。此外，CTF-TF可以很容易地集成到混合基质膜中，表现出高质子传导能力和良好的机械强度。这项工作为质子传导介质的合理设计提供了一种替代策略。