一种后修饰三维共价有机框架材料的合成及其质子导电性能的研究

Synthesis of a Post-Modified Three-Dimensional Covalent Organic Framework Material and the Study of Its Proton Conductivity Performance

摘要: 本文首先按照文献合成了具有稳定结构但性能并不突出具有3D结构的TAPM-DHTA-COF，并以此为基础，通过后修饰的方法将磺酸基团引入到该COF的骨架上，将其命名为TAPM-DHTA-COF-SO₃H，在对其进行结构表征的基础上，对比研究了两种COFs材料在相对湿度为98%时，不同温度下的质子导电性能。结果表明，当温度达到90℃时，TAPM-DHTA-COF-SO₃H的质子传导率可以达到2.04 × 10⁻⁴ S∙cm⁻¹，而TAPM-DHTA-COF的质子传导率仅为9.74 × 10⁻⁵ S∙cm⁻¹。该制备方法不仅简单，并且通过该方法得到的材料具有较高的稳定性以及良好的质子导电性，使其在燃料电池领域中具有应用前景。

Abstract: This paper first synthesized TAPM-DHTA-COF with a stable structure but not outstanding per- formance through literature-based methods, and based on this, introduced sulfonic acid groups onto the framework of this COF by post-modification, naming it TAPM-DHTA-COF-SO₃H. On the basis of its structural characterization, the proton conductivity of the two COFs at different temperatures under a relative humidity of 98% was compared and studied. The results showed that when the temperature reached 90˚C, the proton conductivity of TAPM-DHTA-COF-SO₃H could reach 2.04 × 10⁻⁴ S∙cm⁻¹, while that of TAPM-DHTA-COF was only 9.74 × 10⁻⁵ S∙cm⁻¹. This preparation method is not only simple, but also the materials obtained by this method have high stability and good proton conductivity, making them have application prospects in the field of fuel cells.