Abstract Metal-organic frameworks (MOFs) are introduced as the alternative of the complexes, [Cu(NH3)4]2+ and EDTA-Ca. The rigid structure of the ligands realizes the infinite and porous structure of MOFs. Multi-luminescence is discussed followed single emission. Then, the application of ratiometric fluorescence sensor and visual detection is proposed with multi-emission MOFs as examples. The abundant metal ions and organic ligands as well as the porous structure make MOFs attractive as multi-luminescence probes. Herein the electronic structure and luminescence of lanthanide metals are also mentioned. The ratiometric sensing and visible detection of the targets with MOFs as the probes, especially Ln-MOFs, are discussed. The combination of knowledge points and science frontiers promotes students to understand and master the knowledge. Moreover, the students' interest is stimulated in application of the knowledge to explore the unknown field.
SUN Yi-Qing, YIN Xue-Bo. MOFs with Dual-Emission for Ratiometric Sensing and Visible Detections[J]. Chinese Journal of Chemical Education, 2021, 42(6): 13-20.
