A robust thorium-organic framework as a bifunctional platform for iodine adsorption and Cr(VI) sensitization.

Simple synthetic modulation based on thorium nitrate and tris((4-carboxyl)phenylduryl)amine (HTCBPA) gives rise to a new thorium-based metal-organic framework, Th-TCBPA, which features excellent hydrolytic and thermal stabilities. Incorporating electron-rich TCBPA linkers not only endows Th-TCBPA with high adsorption capacity toward radioiodine vapor, but also makes it a luminescence sensor for the highly sensitive and selective detection of Cr(VI) anions.