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.
Original language | English |
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Pages (from-to) | 330-335 |
Number of pages | 6 |
Journal | European Journal of Inorganic Chemistry |
Volume | 2019 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2019 Jan 17 |
Keywords
- Luminescence
- Metal-organic frameworks
- Sensors
ASJC Scopus subject areas
- Inorganic Chemistry