Nature CommunicationsPost-functionalization of polyethers by photoinduced C–H amidation via polar-radical relaySeung Beom BaekYoungho KimWongyu LeeSangwon SeoDongwook KimMyungeun SeoSukbok Chang2025-08-26Full textDOI https://doi.org/10.1038/s41467-025-63254-z