A new series of five three-dimensional Ln(III) metal-organic frameworks (MOFs) formulated as [Ln4(μ6-L)2(μ-HCOO)(μ3-OH)3(μ3-O)(DMF)2(H2O)4] n {Ln3+ = Tb3+ (1), Eu3+ (2), Gd3+ (3), Dy3+ (4), and Er3+ (5)} was successfully obtained via a solvothermal reaction between the corresponding lanthanide(III) nitrates and 2-(6-carboxypyridin-3-yl)terephthalic acid (H3L). All of the obtained compounds were fully characterized, and their structures were established by single-crystal X-ray diffraction. All products are isostructural and possess porous 3D networks of the fluorite topological type, which are driven by the cubane-like [Ln4(μ3-OH)3(μ3-O)(μ-HCOO)]6+ blocks and μ6-L3- spacers. Luminescent and sensing properties of 1-5 were investigated in detail, revealing a unique capability of Tb-MOF (1) for sensing acetone and metal(III) cations (Fe3+ or Ce3+) with high efficiency and selectivity. Apart from a facile recyclability after sensing experiments, the obtained Tb-MOF material features a remarkable stability in a diversity of environments such as common solvents, aqueous solutions of metal ions, and solutions with a broad pH range from 4 to 11. In addition, compound 1 represents a very rare example of the versatile Ln-MOF probe capable of sensing Ce3+ or Fe3+ cations or acetone molecules.

Multifunctional Ln-MOF Luminescent Probe for Efficient Sensing of Fe3+, Ce3+, and Acetone.

Metal-organic frameworks (MOFs) are a unique class of crystalline solids comprised of metal cations (or metal clusters) and organic ligands that have shown a wide variety of applications. Recently, due to the unique luminescent properties of MOFs, the research and development of these materials have become one of the most intensely and broad areas. Thanks to the crystalline nature, diverse and easily modifiable structures, luminescent metal-organic frameworks (LMOFs) have been applied to lighting, information storage, food quality control, biological monitoring, chemical threat detection, and chemical sensing for environmental analysis. This review briefly introduces the main types of LMOFs and summarizes its application in environmental pollutant detection, including the sensing of temperature, pH, nitroaromatic explosives, small molecules, metallic cations, as well as the inorganic anion.

Environmental pollution analysis based on the luminescent metal organic frameworks: A review

Safeguarding Osteointegration in Diabetic Patients: A Potent “Chain Armor” Coating for Scavenging ROS and Macrophage Reprogramming in a Microenvironment-Responsive Manner

Ecological risk assessment of cerium for tropical agroecosystems.

Trivalent rare earth elements (REEs) are widely used in agriculture. Aerially applied REEs enter leaf epidermal cells by endocytosis and act systemically to improve the growth of the whole plant. The mechanistic basis of their systemic activity is unclear. Here, we show that treatment of Arabidopsis leaves with trivalent lanthanum [La(III)], a representative of REEs, triggers systemic endocytosis from leaves to roots. La(III)-induced systemic endocytosis requires AtrbohD-mediated reactive oxygen species production and jasmonic acid. Systemic endocytosis impacts the accumulation of mineral elements and the development of roots consistent with the growth promoting effects induced by aerially applied REEs. These findings provide insights into the mechanistic basis of REE activity in plants.

/pdf/lanthanum-iii-triggers-atrbohd-and-jasmonic-acid-dependent-42zwmbaliv.pdf

Lanthanum(III) triggers AtrbohD- and jasmonic acid-dependent systemic endocytosis in plants.

Abnormal pinocytosis and valence-variable behaviors of cerium suggested a cellular mechanism for plant yield reduction induced by environmental cerium.

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Abnormal pinocytosis and valence-variable behaviors of cerium suggested a cellular mechanism for plant yield reduction induced by environmental cerium.