Linearly pi-extended thienyl porphyrin namely 5,10,15,20 tetrakis (5-bromothiophen-2-yl) porphyrin, and its cobalt and copper complexes were synthesized in good and quantitative yields respectively. The chemical structure of the synthesized porphyrins was confirmed by spectroscopic techniques (FT-IR, NMR, MS, and UV-Vis). Additionally, the thermal gravimetric analysis (TGA) was measured to investigate the high-temperature stability of the porphyrins. Subsequently, the porphyrins were used as electrocatalysts for the oxygen evolution reaction (OER) in 1 M KOH. The cobalt-porphyrin complex showed the best performance in term of a low band gap value and a high catalytic activity with good stability towards the OER.

中文翻译：

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介孔四（5-溴噻吩-2-基）卟啉及其钴铜配合物的合成，热稳定性和电催化活性

线性π-延伸的噻吩卟啉即5,10,15,20四（5-溴噻吩-2-基）卟啉及其钴和铜配合物分别以良好和定量的产率合成。通过光谱技术（FT-IR，NMR，MS和UV-Vis）确认了合成卟啉的化学结构。此外，测量了热重量分析法（TGA），以研究卟啉的高温稳定性。随后，卟啉被用作在1 M KOH中进行放氧反应（OER）的电催化剂。钴-卟啉配合物在低带隙值和高催化活性方面表现出最佳性能，并且对OER具有良好的稳定性。