As two pivotal functional segments, triazine and porphyrin can be coupled to form a highly cross-linked conjugated polymer. Although the obtained conjugated polymers are almost insoluble in most solvents, a small amount of protonic acid can cause the formation of a colloidal solution of polymers. The dissolution process has proved to be a surface charge effect induced by protonation of porphyrin units in the polymer framework. High-quality conjugated polymer films have been prepared on diverse substrates by solution drop-casting and then used for thermoelectric (TE) applications. The films exhibit remarkable TE performance with high Seebeck coefficients (−6650 μV K⁻¹) and electronic conductivities (0.042 S cm⁻¹), yielding a power factor of 185 μW m⁻¹ K⁻², which, collectively, are the highest among all reported n-type organic TE materials. This work may pave the way for the design and development of solution-processed, cross-linked polymer films as promising TE materials.

三嗪和卟啉作为两个关键的功能链段，可以偶联形成高度交联的共轭聚合物。尽管所获得的共轭聚合物几乎不溶于大多数溶剂，但是少量的质子酸会引起聚合物胶体溶液的形成。溶解过程已证明是聚合物骨架中卟啉单元质子化引起的表面电荷效应。高质量的共轭聚合物薄膜已通过溶液滴铸法在各种基材上制备，然后用于热电（TE）应用。这些薄膜具有出色的TE性能，并具有高塞贝克系数（−6650μVK ^-1）和电子电导率（0.042 S cm ^-1），产生的功率因数为185μWm ^-1 K总体上，在所有报道的n型有机TE材料中，⁻²最高。这项工作可能为溶液处理的交联聚合物薄膜作为有希望的TE材料的设计和开发铺平道路。