Inside Back Cover: Dissolution‐Recrystallization: A Novel Mechanism for Fluorochromic Detection of Th4+ Using Color‐Tunable Luminescent Metal‐Organic Frameworks.

The dissolution– recrystallization of metal- organic frameworks ( MOFs) opens exciting possibilitiesfor fluorochromic detection of radionuclides. In their Research Article ( e202410453), Jian Lin et al. introduce a novel method for detecting Th4+ ions using a series of color- tunable luminescent lanthanide- based MOFs. The inherent instability of MOFs is leveraged to enable Th4+ detection through an unprecedented dissolution– recrystallization mechanism, transforming a perceived limitation into a valuable tool for fluorochromic sensing of radionuclides. [Extracted from the article]