Chem. Sci., 2025, Accepted Manuscript DOI: 10.1039/D5SC03858H, Edge Article Tommaso Marchetti, Federico Rastrelli, Maohua Lin, Alessandro Negri, Sara Bonacchi, Leonard Jan Prins, Luca Gabrielli While photoisomerization has dominated the design of photoswitchable catalysts, this work introduces an alternative approach: leveraging light-induced photodimerization to assemble catalytically active species. The adopted strategy is based on a...