Introduction Click to copy section linkSection link copied! Photoredox catalysis has revolutionized synthetic organic chemistry by enabling energetically demanding transformations under mild conditions. (1−6) Among the most widely used photocatalysts are Ru(II)- and Ir(III)-based polypyridyl complexes, (7−9) combining tunable visible-light absorption, long-lived excited states, strong redox properties, and excellent photostability.