Nature CommunicationsPost-synthetically modified crown ether-based supramolecular framework for efficient radium sequestrationWenchang WangWenya TaiJiahao LouLei LiQiang WuBiao HuJun WangXiangbiao YinChengliang Xiao2026-03-24Full textDOI https://doi.org/10.1038/s41467-026-70874-6