Two unusual nanocage-based Ln-MOFs with triazole sites: highly fluorescent sensing for Fe3+ and Cr2O7 2−, and selective CO2 capture

Jian Qiang Liu, Gao Peng Li, Wei Cong Liu, Qing Lin Li, Bao Hong Li, Robert W. Gable, Lei Hou, Stuart R Batten

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Luminescent metal–organic frameworks (LMOFs) containing fluorescent probes for the detection of pollutants such as organic solvents and heavy metals are becoming increasingly important, with lanthanide-MOF (Ln-MOF) materials receiving greater attention owing to the possibility of achieving fine-tuned luminescent properties. Herein, two unusual isostructural nanocage-based three-dimensional Ln-MOFs, 1-Ln (Ln=Tb, Eu), are constructed, using a new diisophthalate ligand with active Lewis basic triazole sites. Selective gas adsorption, especially the removal of CO2 from CH4, a primary component of natural gas and biogas, is desirable in terms of both economic and environmental considerations. 1-Eu is found to exhibit highly efficient luminescent sensing for Fe3+ cations and Cr2O7 2− anions, as well as selective CO2 capture over CH4.

Original languageEnglish
Pages (from-to)1299-1304
Number of pages6
Issue number12
Publication statusPublished - 1 Dec 2016


  • coordination polymers
  • crystal engineering
  • luminescence
  • metal–organic frameworks
  • sensors

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