A luminescent lanthanide MOF for selectively and ultra-high sensitively detecting Pb2+ ions in aqueous solution

An amazing millimeter-sized lanthanide metal–organic framework, Tb-MOF, was synthesized. Due to the larger volume, Pb²⁺ ions can be sensitively and selectively detected by visible fluorescence quenching of Tb-MOF. Additionally, a Tb-MOF crystal film with an ultra-high recognition ability of Pb²⁺ ions has been fabricated successfully.