Blue-Emitting Ligand-Mediated Assembly of Rare-Earth MOFs toward White-Light Emission, Sensing, Magnetic, and Catalytic Studies

Abstract

New lanthanide carboxylate compounds with two-(2D) and threedimensional (3D) structures have been prepared by employing 2,5-bis(prop-2-yn-1yloxy)terephthalic acid (2,5-BPTA) as an organic linker. The compounds, [

Visual and Real-Time Monitoring of Cd2+ in Water, Rice, and Rice Soil with Test Paper Based on [2 + 2] Lanthanide Clusters

“…With the excitation at 320 nm, Tb 2 Tb 2 shows four characteristic line-like emission peaks at 490, 543, 585, and 620 nm (Figure a), − while Eu 2 Eu 2 displays four characteristic sharp emission peaks at 590, 615, 650, and 695 nm (Figure b), − and Tb 2 Tb 2 and Eu 2 Eu 2 emit the characteristic green and red light of Tb 3+ and Eu 3+ , respectively. , The crystal photos of Tb 2 Tb 2 and Eu 2 Eu 2 under daylight and UV lamp were tested on a fluorescence microscope (inset of Figure a,b), that Tb 2 Tb 2 is transparent and green under daylight and UV lamp, respectively, while Eu 2 Eu 2 is transparent and red under daylight and UV lamp, respectively . The photos are in line with their CIE results ( Tb 2 Tb 2 : 0.3508, 0.5687; Eu 2 Eu 2 : 0.668, 0.3303) (Figure d).…”

Fixing CO2 under Atmospheric Conditions and Dual Functional Heterogeneous Catalysis Employing Cu MOFs: Polymorphism, Single-Crystal-to-Single-Crystal (SCSC) Transformation and Magnetic Studies

“…Research on metal–organic framework (MOF) compounds occupies a prime position during the last 2 decades. − MOFs have transformed the focus of research in inorganic material chemistry. The versatility of the compounds has been established by their many interesting potential applications in the areas such as sorption, − separation, , luminescence, − catalysis, − proton conduction, − magnetism, , etc. The developments over the years allowed the focus of the research to shift toward preparing the compounds for tailor-made purposes such as high porosity and surface area, increased number of active catalytic centers, multiple chemical functionalities, etc. − To achieve these goals, one needs to make a careful choice of the metal node (ions), a linking ligand that hosts the multiple functionalities, and also a possible secondary ligand.…”

Stable Europium(III) Metal–Organic Framework Demonstrating High Proton Conductivity and Fluorescence Detection of Tetracyclines

“…Advanced functional materials with various properties in a material have attracted massive attention from researchers. − Metal–organic frameworks (MOFs) are favorable for scientists to design multifunctional materials due to their abundant and tunable structures. , Rare-earth metal–organic frameworks (RE-MOFs) combining the advanced functions of MOFs and the distinctive properties of rare-earth ions have become an attractive category of multifunctional crystalline materials. − The unique properties of rare-earth ions mainly include excellent luminescence properties and magnetic properties. − The luminescence of rare-earth ions has extremely high color purity and long lifetime . Therefore, rare earth-based materials are widely used in sensing, bioimaging, and light-emitting diodes. − Furthermore, stable RE-MOFs have received widespread attention as proton-conducting materials with potential applications in fuel cells. − However, multifunctional RE-MOFs with both fluorescent sensing and proton-conducting properties are still relatively rare.…”