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Isoreticular Tolerance and Phase Selection in the Synthesis of Multi-Module Metal-Organic Frameworks for Gas Separation and Electrocatalytic OER.
Angew Chem Int Ed Engl
January 2025
University of California Riverside, Chemistry Department, Chemistry Department, 92521, Riverside, UNITED STATES OF AMERICA.
Although metal-organic frameworks are coordination-driven assemblies, the structural prediction and design using metal-ligand interactions can be unreliable due to other competing interactions. Leveraging non-coordination interactions to develop porous assemblies could enable new materials and applications. Here, we use a multi-module MOF system to explore important and pervasive impact of ligand-ligand interactions on metal-ligand as well as ligand-ligand co-assembly process.
View Article and Find Full Text PDFZirconium(IV)-Catalysed Hydrosilylation of Organic Carbonates and Polycarbonates Household Wastes into Alcohol Derivatives.
Chemistry
January 2025
Centre CEA Paris-Saclay: Commissariat a l'Energie Atomique et aux Energies Alternatives Centre de Saclay, IRAMIS Institute, CEA - Saclay, 91190, Gif-Sur-Yvette, FRANCE.
The Schwartz's reagent Cp2Zr(H)Cl is a well known stoichiometric reagent for the reduction of unsaturated organic molecules but it has rarely been used in catalytic transformations. Herein, we describe the reduction of a variety of organic carbonates using the catalyst Cp2Zr(H)Cl in combination with Me(MeO)2SiH (DMMS) as reductant. This method was further applied to the reductive depolymerization of some polycarbonate materials and yielded silylated alcohols and diols in mild conditions.
View Article and Find Full Text PDFAre the Imidazole Ionic Liquids Suitable Lubricants for Slippery Coatings?
Langmuir
January 2025
A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia.
The results of an investigation of an impact of the structure of recently synthesized bis(trifluoromethylsulfonyl)imide mono- and dicationic ionic liquids on their properties and behavior as lubricants for slippery liquid infused superhydrophobic coatings are presented for a wide temperature range. In this study, a new approach based on monitoring the surface tension of a liquid sessile droplet on top of a coating was exploited for the analysis of the evolution of the coating properties in prolonged contact with the liquid. It was found that the continuous contact with water flow results in slippery property degradation according to two different scenarios.
View Article and Find Full Text PDFMetal-organic frameworks encapsulating gold nanoclusters and carbon dots for ratiometric fluorescent detection of formaldehyde in real food samples, construction materials and indoor environments.
Mikrochim Acta
January 2025
Hebei Lansheng Bio-Tech Co, Ltd, Shijiazhuang, 052263, P. R. China.
A novel fluorescence sensing nanoplatform (CDs/AuNCs@ZIF-8) encapsulating carbon dots (CDs) and gold nanoclusters (AuNCs) within a zeolitic imidazolate framework-8 (ZIF-8) was developed for ratiometric detection of formaldehyde (FA) in the medium of hydroxylamine hydrochloride (NHOH·HCl). The nanoplatform exhibited pink fluorescence due to the aggregation-induced emission (AIE) effect of AuNCs and the internal filtration effect (IFE) between AuNCs and CDs. Upon reaction between NHOH·HCl and FA, a Schiff base formed via aldehyde-diamine condensation, releasing hydrochloric acid.
View Article and Find Full Text PDFSynchronicity Between the Rates of Reaeration and Pollutants Degradation During Self-Purification in a Large River.
Bull Environ Contam Toxicol
January 2025
College of Environment and Ecology, Chongqing University, Chongqing, 400045, China.
The pollutants after were discharged into the water can gradually degrade through the self-purification. The oxygen consumption and pollutant degradation rates characterize the self-purification of small and medium-sized streams, while the dynamics of the two characteristics for large rivers has not been reported yet. The in-situ investigation for 297 sites in the 1700 km stream of the Yangtze River was conducted.
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