
Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 27, 2025
Language: Английский
Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 27, 2025
Language: Английский
Small, Journal Year: 2024, Volume and Issue: 20(25)
Published: Jan. 8, 2024
Abstract Metal–organic frameworks (MOFs) have attracted immense attention as efficient heterogeneous catalysts over other solid catalysts, however, their chemical environment instability often limits catalytic potential. Herein, utilizing a flexible unexplored tetra‐acid ligand and employing the mixed approach, 3D interpenetrated robust framework is strategically developed, IITKGP‐51 (IITKGP stands for Indian Institute of Technology Kharagpur), which retained its crystallinity wide range pH solution (4–12). Having ample open metal sites (OMSs), explored catalyst in one‐pot Hantzsch condensation reaction, with low loading broad substrates. The synthesis drug molecules remains one most significant emergent areas organic medicinal chemistry. Considering such practical utility, biologically important Nemadipine B Nifedipine (calcium channel protein inhibitor) are synthesized first time by using this fully characterized via SC‐XRD spectroscopic methods. This report inaugurates usage MOF material molecules.
Language: Английский
Citations
26Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(32), P. 12989 - 13000
Published: Aug. 2, 2023
Metal–organic frameworks (MOFs) have been recognized as one of the most promising porous materials and offer great opportunities for rational design new catalytic solids having structural diversity functional tunability. Despite numerous inherent merits, their chemical environment instability limits practical usage demands further exploration. Herein, by employing mixed-ligand approach, we designed developed a robust 3D Co-MOF, [Co2(μ2-O)(TDC)2(L)(H2O)2]·2DMF (H2TDC = 2,5-thiophenedicarboxylic acid, L 3,3′-azobispyridine), IITKGP-50 (IITKGP stands Indian Institute Technology Kharagpur), which exhibited excellent framework robustness not only in water but also wide range aqueous pH solutions (pH 2–12). Taking advantage superior presence high-density open metal sites, was explored catalyzing two-component Knoevenagel condensation reaction three-component Strecker reactions. Moreover, to verify size selectivity IITKGP-50, smaller bulkier substrates comparison with MOF's pore cavity (8.1 × 5.6 Å2) were employed, relatively lesser conversions sterically aldehyde derivatives confirmed that cycle occurs inside cavity. The easy scalability, lower catalyst loading compared benchmark MOFs, magnificent conversion rate over substrates, recyclability without significant performance loss made heterogeneous candidate.
Language: Английский
Citations
26Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215905 - 215905
Published: May 12, 2024
Language: Английский
Citations
17Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216089 - 216089
Published: July 16, 2024
Language: Английский
Citations
17Advanced Science, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 11, 2024
Membranes with switchable wettability, solvent resistance, and toughness have emerged as promising materials for separation applications. However, challenges like limited mechanical strength, poor chemical stability, structural defects during membrane fabrication hinder their widespread adoption. Covalent organic frameworks (COFs), crystalline constructed from molecules connected by covalent bonds, offer a solution due to high porosity, customizable properties. The ordered structures functionality provide COFs lightweight framework, large surface area, tunable pore sizes, which attracted increasing attention applications in separations. Recent research has extensively explored the preparation strategies of COF membranes various processes. This review uniquely delves into influence techniques, including interfacial polymerization, layer-by-layer assembly, situ growth, on thickness performance. It comprehensively explores design potential these methods, particular focus gas separation, oil/water nanofiltration. Furthermore, future opportunities, within this field, directions development are proposed.
Language: Английский
Citations
17Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 134055 - 134055
Published: March 15, 2024
Language: Английский
Citations
15Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 15, 2025
Separation of multi-component mixtures in an energy-efficient manner has important practical impact chemical industry but is highly challenging. Especially, targeted simultaneous removal multiple impurities to purify the desired product one-step separation process extremely difficult task. We introduced a pore integration strategy modularizing ordered structures with specific functions for on-demand assembly deal complex systems, which are unattainable by each individual pore. As proof concept, two ultramicroporous nanocrystals (one C2H2-selective and other CO2-selective) as shell pores were respectively grown on C2H6-selective porous material core Both respective pore-integrated materials show excellent ethylene production performance dynamic breakthrough experiments C2H2/C2H4/C2H6 CO2/C2H4/C2H6 gas mixture, even better than that from traditional tandem-packing processes originated optimized mass/heat transfer. Thermodynamic simulation results explained pre-designed modules can perform target independently materials. Pore offers approach assembling demand achieve mixtures.
Language: Английский
Citations
2International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 117, P. 135 - 145
Published: March 15, 2025
Language: Английский
Citations
2Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(24)
Published: April 11, 2023
The ethanol/water separation challenge highlights the adsorption capacity/selectivity trade-off problem. We show that target guest can serve as a gating component of host to block undesired guest, giving molecular sieving effect for adsorbent possessing large pores. Two hydrophilic/water-stable metal azolate frameworks were designed compare effects and pore-opening flexibility. Large amounts (up 28.7 mmol g-1 ) ethanol with fuel-grade (99.5 %+) even higher purities (99.9999 be produced in single process from not only 95 : 5 but also 10 90 mixtures. More interestingly, pore apertures showed high water capacity exceptionally water/ethanol selectivity characteristic sieving. Computational simulations demonstrated critical role guest-anchoring aperture guest-dominated process.
Language: Английский
Citations
23Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(22)
Published: May 3, 2024
Abstract It is necessary to develop excellent sensors for volatile organic compounds (VOCs) detection from the perspective of environmental protection and human health. Luminescent lanthanide metal‐organic frameworks (MOFs) have many advantages such as porosity, luminescence, structural controllability, making them very suitable luminescent sensing materials. Based on a functional oriented strategy, novel Ln‐MOFs are successfully constructed their structure properties characterized in detail. A series vapor luminescence tests shown that Eu/Tb doped L1‐Eu 0.1 /Tb 0.9 not only exhibits high selectivity alcohols, especially ethanol vapor, but also has sensitivity extremely low limit (9.76 mg L −1 ). To knowledge, there no reports ratio based those with performance. Crystal determination demonstrates binds framework through multiple hydrogen bonding interactions, altering energy transfer efficiency between Tb 3+ Eu achieve detection. In addition, good repeatability, prepared thin film material portability processability. This work can provide some experience development VOCs materials better
Language: Английский
Citations
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