Facile synthesis of binary two-dimensional lanthanide metal-organic framework nanosheets for ratiometric fluorescence detection of mercury ions

Recent Progress in Metal-Organic Framework Based Fluorescent Sensors for Hazardous Materials Detection

“…Mercury Ion (Hg 2+ ): The mercury ion Hg 2+ , a highly toxic heavy metal, can be converted to methylmercury, a powerful neurotoxin that can accumulate through the food chain and be ingested by humans to cause serious symptoms. These matters have contributed significantly to the rapid revolution in Hg 2+ ion detection technology [ 75 , 76 , 77 ].…”

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 .…”

A Zr-MOF nanoflower sensor and its mixed-matrix membrane for the highly sensitive detection of nitroaromatics

“…[18][19][20][21][22] Twodimensional (2-D) MOF nanosheets, an emerging type of 2D material that possess good dispersibility, large surface areas and abundant accessible sites, have shown great potential in luminescence sensing. [23][24][25][26][27][28][29][30][31] There are some pioneering studies showing the superior performance of 2D MOF nanosheets in the construction of fluorescent sensors. [32][33][34][35] However, work on MOFs with controllable nanostructures for luminescence sensing is still relatively scarce.…”