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Abstract <p>Three A<sub>2</sub>B-type triaryl corrole copper complexes bearing <i>p</i>–nitrobenzyl (<b>1</b>), <i>p</i>–methylsulfonylphenyl (<b>2</b>), and <i>p</i>–hydroxyphenyl (<b>3</b>) at the 10–position and pentafluorophenyl at 5- and 15-position were prepared (in which <b>2</b> is a new complex), and their electrocatalytic hydrogen evolution reaction in organic and neutral aqueous media was also investigated. The results showed that these three copper corroles exhibited good catalytic HER activity in both organic and neutral aqueous systems. Catalytic efficiency follows the order of <b>2</b> &gt; <b>1</b> &gt; <b>3</b>, showing the stronger electron–withdrawing group can enhance more of the catalytic activity of the complexes. In organic phase, when using trifluoroacetic or ptoluenesulfonic acid as the proton source, the catalytic process may proceed via an EECC (E: electron transfer, C: proton coupling) pathway. Complex <b>2</b> had a turnover frequency up to 361.9&#xa0;h<sup>− 1</sup> in neutral aqueous media at an overpotential of 1338 mV and exhibited excellent stability during the electrolysis.</p> Graphical Abstract <p></p>

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Electrocatalytic Hydrogen Evolution Reaction of A2B-Type Triaryl Corrole Copper Complexes

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • Yu-Jun Shao,
  • De-Yu Guo,
  • Feng Li,
  • Hao Zhang,
  • Yan-Mei Sun,
  • Li-Ping Si,
  • Hai-Yang Liu

摘要

Abstract

Three A2B-type triaryl corrole copper complexes bearing p–nitrobenzyl (1), p–methylsulfonylphenyl (2), and p–hydroxyphenyl (3) at the 10–position and pentafluorophenyl at 5- and 15-position were prepared (in which 2 is a new complex), and their electrocatalytic hydrogen evolution reaction in organic and neutral aqueous media was also investigated. The results showed that these three copper corroles exhibited good catalytic HER activity in both organic and neutral aqueous systems. Catalytic efficiency follows the order of 2 > 1 > 3, showing the stronger electron–withdrawing group can enhance more of the catalytic activity of the complexes. In organic phase, when using trifluoroacetic or ptoluenesulfonic acid as the proton source, the catalytic process may proceed via an EECC (E: electron transfer, C: proton coupling) pathway. Complex 2 had a turnover frequency up to 361.9 h− 1 in neutral aqueous media at an overpotential of 1338 mV and exhibited excellent stability during the electrolysis.

Graphical Abstract