Two Unusual Nanocage-Based Ln-MOFs with Triazole Sites: Highly Fluorescent Sensing for Fe³⁺ and Cr₂O₇²⁻, and Selective CO₂ Capture

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• 作者：Prof. Dr. Jian-Qiang Liu ; Dr. Gao-Peng Li ; Wei-Cong Liu ; Qing-Lin Li ; Bao-Hong Li ; Dr. Robert W. Gable ; Prof. Lei Hou and Prof. Stuart R. Batten
• 刊名：ChemPlusChem
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：81
• 期：12
• 页码：1299-1304
• 全文大小：1224K
• ISSN：2192-6506

文摘

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 Cr₂O₇²⁻ anions, as well as selective CO₂ capture over CH₄.