Issue 72, 2023

Electrocatalytic hydrogen evolution with a copper porphyrin bearing meso-(o-carborane) substituents

Abstract

A newly designed copper complex of 5,15-bis(pentafluorophenyl)-10,20-bis(o-carborane)porphyrin (1) was synthesized and tested for the electrocatalytic hydrogen evolution reaction (HER). In acetonitrile, 1 was much more efficient than Cu 5,15-bis(pentafluorophenyl)-10,20-diphenylporphyrin (2) for electrocatalytic HER by shifting the catalytic wave to the anodic direction by 190 mV. In aqueous media, 1 also outperformed 2 by achieving higher current densities under smaller overpotentials. This enhancement was attributed to the aromatic and the strong electron-withdrawing properties of o-carborane groups. This work is significant to address the crucial effects of meso-(o-carborane) substituents of metal porphyrins on boosting the electrocatalytic HER.

Graphical abstract: Electrocatalytic hydrogen evolution with a copper porphyrin bearing meso-(o-carborane) substituents

Supplementary files

Article information

Article type
Communication
Submitted
28 יונ 2023
Accepted
07 אוג 2023
First published
07 אוג 2023

Chem. Commun., 2023,59, 10777-10780

Electrocatalytic hydrogen evolution with a copper porphyrin bearing meso-(o-carborane) substituents

X. Peng, J. Han, X. Li, G. Liu, Y. Xu, Y. Peng, S. Nie, W. Li, X. Li, Z. Chen, H. Peng, R. Cao and Y. Fang, Chem. Commun., 2023, 59, 10777 DOI: 10.1039/D3CC03104G

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