Cover Feature: Photoelectrochemical C−H Activation Through a Quinacridone Dye Enabling Proton‐Coupled Electron Transfer (ChemSusChem 5/2023)

The Cover Feature shows the photoelectrochemical activation of C−H bonds with mesoporous SnO₂ electrodes sensitized with a quinacridone dye (pigment violet 19, used in paints). The key feature of quinacridone is the possibility to operate through a proton-coupled electron transfer mechanism, generating a nitrogen-based radical characterized by a bond dissociation free energy (BDFE) of 80.5 kcal mol⁻¹ and capable of hydrogen atom abstraction from allylic and benzylic C−H bonds. More information can be found in the Research Article by Y. Yang, G. A. Volpato, E. Rossin et al.

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