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

• Published in: ChemSusChem Vol. 16; no. 5
• Main Authors: Yang, Yunshuo, Volpato, Giulia Alice, Rossin, Elena, Peruffo, Nicola, Tumbarello, Francesco, Nicoletti, Catia, Bonetto, Ruggero, Paoloni, Lorenzo, Umari, Paolo, Colusso, Elena, Dell'Amico, Luca, Berardi, Serena, Collini, Elisabetta, Caramori, Stefano, Agnoli, Stefano, Sartorel, Andrea
• Format: Journal Article
• Language: English
• Published: 08.03.2023
• Subjects: bond-dissociation free energy; C−H activation; dyes; photoelectrochemistry; proton-coupled electron transfer
• ISSN: 1864-5631; 1864-564X
• DOI: 10.1002/cssc.202300240

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 ion 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.