Ultra-Selective Recognition of UO22+ via Arousing its Intrinsic Luminescence by a Precisely Designed Europium Metal-Organic Framework

Abstract

Highly selective recognition of UO22+ was performed by a europium metal-organic framework (Eu-PDA). Benefiting from the unique chemical structure of Eu-PDA, energy transfer from PDA to UO22+ was enabled, resulting in the highly up-regulated fluorescence of UO22+. The Eu-PDA probe showed excellent specificity to UO22+ over numerous interfering species, as the intrinsic emissions of UO22+ were triggered.