Zn-Based Three-Dimensional Metal-Organic Framework for Selective Fluorescence Detection in Zwitterionic Ions

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(8), P. 3566 - 3566

Published: April 10, 2025

Zinc-based MOFs exhibit significant advantages in ion detection due to their unique structure and chemical properties. They can efficiently selectively recognize detect specific ions, making them powerful analytical tools for applications environmental monitoring, biomedical fields, more. In this work, we used a simple ligand improve the coordination environment of Zn2+ ions successfully synthesized 3D compound Zn(all-bdc)(Py) MOF through straightforward hydrothermal method at low temperature. Additionally, explored potential as bifunctional fluorescence probe both cationic anionic recognition. The results showed that porous exhibited excellent recognition ability trivalent iron (Fe3+) potassium permanganate (KMnO4-) its highly structures efficient When were added 500 μL 100 μL, was effectively quenched, limits these two 0.95 μM 0.13 μM, respectively. mixed-ion experiments also demonstrated even presence similar still maintained good selective ability, specifically identifying Fe3+ KMnO4- ions. This work provides novel synthetic strategy design capable detection, expanding application sensing analysis.

Language: Английский

Inversed Benzene/Cyclohexene/Cyclohexane Adsorption Selectivities for One-Step Purification of Cyclohexene and Beyond

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: May 12, 2025

Separation of benzene/cyclohexene/cyclohexane (Bz/Cye/Cya) mixtures, especially purification Cye, is crucial but challenging in the petrochemical industry. Here, we report two new metal-organic frameworks with opposite adsorption selectivities for on-demand separation/purification Bz/Cye/Cya mixtures. Although they possess similar and pore structures, their surfaces are functionalized by hydrophobic ethyl hydrophilic hydroxymethyl groups, which interact conversely Bz/Cye/Cya, giving a record-high Bz selectivity (129) first example Cya/Cye/Bz (18.6), respectively. Equimolar ternary mixture breakthrough experiments showed that could directly produce high-purity Cya (99.5%+, 0.39 mmol g-1) or 0.25 g-1), tandem connection adsorbents enabled direct production Cye 0.37 one-step process. Further, bypass-tandem strategy proposed to not only greatly improve productivity 0.57 also simultaneously 0.36 g-1).

Language: Английский