Title
Synthesis, Structure, and Photoluminescence Properties of a Metal‐Organic Framework with Hexagonal Channels: Selective Turn‐On Sensing for Mg2+ Ion
Author
Sunhwi Eom, Sora Park, Jeong Hwa Song, Woo Ram Lee, Han Geul Lee, Dong Won Kang, Joonyoung Francis Joung, Sungnam Park, Dohyun Moon, Chang Seop Hong
Year
2019
Journal
European Journal of Inorganic Chemistry
Abstract
A three‐dimensional Cd2+ framework (1) with wide one‐dimensional hexagonal channels was prepared based on a tripodal tricarboxylate ligand possessing nitrogen donor atoms. The Cd atoms form a chain structure bridged by carboxylates and aqua ligands. Upon Mg2+ ion capture, the fluorescence emission of this porous material was 5.2 times greater than its Mg2+‐free fluorescence. To the best of our knowledge, such enhancement has not been previously reported for metal–organic framework sensory systems. The sensing performance of 1 is reversible over repeated cycles of Mg2+inclusion and release, revealing the reusability of this material. In the presence of other tested metal ions, Mg2+ ions were selectively detected owing to the operation of this “turn‐on” mechanism. Thus, this platform is a promising sensor material for selective Mg2+ ion recognition.
Instrument
FP-8500
Keywords
Fluorescence, Photoluminescence, Sensors, Ligand binding, Inorganic chemistry, Materials