Preparation of dual-ligands Eu-MOF nanorods with dual fluorescence emissions for highly sensitive and selective ratiometric/visual fluorescence sensing phosphate

A novel 2D metal–organic framework probe: a highly sensitive and visual fluorescent sensor for Al3+, Cr3+ and Fe3+ ions

“…[21][22][23][24][25][26][27][28] The detection mechanism based on MOFs is also attributed to the electron/ energy transfer, which is closely related to the weak interactions (p-p stacking or hydrogen bonds) between the MOFs and the analytes. [29][30][31] Of the reported MOF-based fluorescent sensors, some sensors predominately show quenched emission, defined as ''turn-off'' sensors. [32][33][34][35] For instance, the Feng group reported a dye-dispensed HCAA@UiO-66, which displayed a rapid, selective and sensitive fluorescence quenching response towards Fe 3+ with a detection limit of 8.45 Â 10 À5 mol L À1 .…”

Photo-functionalized metal–organic frameworks for anti-counterfeiting applications

“…41 Such PMOFs not only include MOFs directly constructed with Ln 3+ ions as metal nodes, but also involve the introduction of Ln 3+ ions into a MOF structure as guests by post-synthesis modification. 42–44…”

An Overview of the Design of Metal-Organic Frameworks-Based Fluorescent Chemosensors and Biosensors

“…In this work, the binding between PO 4 3− and Tb 3+ inhibited the antenna effect, leading to the decrease of Tb 3+ emission. Recently, Shi et al prepared dual-ligands Eu-MOF with dual emissions for the ratiometric/visual determination of PO 4 3− [ 100 ]. As illustrated in Figure 5 C, Eu-MOFs with benzene-1,3,5-tricarboxylate (BTC) and BDC-NH 2 as ligands exhibited two emissions at 425 nm and 617 nm.…”

“…( C ) Schematic illustration of the detection of PO 4 3− based on Eu-BTC-BDC-NH 2 . Reproduced with permission [ 100 ]. Copyright 2022, Elsevier.…”