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H and F spin-lattice relaxation studies for 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide in bulk and mesoporous MCM-41 silica matrix confinement were performed under varying temperatures in a broad range of magnetic fields, corresponding to H resonance frequency from 5Hz to 30MHz.A thorough analysis of the relaxation data revealed a three-dimensional translation diffusion of the ions in the bulk liquid and two-dimensional diffusion in the vicinity of the confining walls in the confinement. Parameters describing the translation dynamics were determined and compared. The rotational motion of both kinds of ions in the confinement was described by two correlation times that might be attributed to anisotropic reorientation of these species.
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http://dx.doi.org/10.3390/ma13194351 | DOI Listing |
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September 2025
Faculty of Electrical Engineering, Częstochowa University of Technology, Al. Armii Krajowej 17, Częstochowa, 42-200, Poland.
Bent-core nematic liquid crystals exhibit unique properties, including giant flexoelectricity and polar electro-optic responses, making them ideal for energy conversion and electro-optic applications. When confined in nanopores, they can stabilize chiral nanostructures, enhance polar order, and enable defect-driven switching - offering potential in nanofluidics, sensing, and adaptive optics. The thermotropic ordering of the bent-core dimer CB7CB confined in anodic aluminum oxide (AAO) and silica membranes with precisely engineered cylindrical nanochannels - ranging from just a few nanometers to several hundred nanometers-is examined.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China.
Here, we report a multifunctional hybrid membrane-coated nanomotor for cancer chemoimmunotherapy, which consists of mesoporous silica-coated iron oxide nanoparticles (MF) as a drug carrier, loaded with doxorubicin (DOX), l-arginine (l-arg), and glucose oxidase (GOx), and camouflaged with a hybrid of red blood cell membranes (mRBC) and cancer cell membranes (CCM). RM-GDL-MF has a cascade of catalytic reactions, where glucose is catalyzed by GOx to produce HO, and l-arg is oxidized by the produced HO to release nitric oxide (NO), leading to self-propelled motion in order to promote the penetration of the extracellular matrix (ECM) in the tumor. The hybrid membrane provides not only stealth properties from mRBC to evade immune clearance but also tumor-orientation ability to target the tumor from the CCM.
View Article and Find Full Text PDFInt Arch Allergy Immunol
September 2025
Silica exposure is a significant environmental hazard linked to lung inflammation and fibrosis. This study utilized in-silico analysis of publicly available transcriptomic datasets (GSE250537 and GSE142446) from silica-exposed Fischer 344 rats to investigate molecular pathways and potential therapeutic targets. Rats were exposed to crystalline silica via inhalation, and transcriptomic data from lung and blood samples were analyzed at four post-exposure intervals (1-day, 3-month, 6-month, and 9-month).
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, carrer dels Til·lers, Cerdanyola del Vallès, 08193 Barcelona, Spain.
The functional properties of nanocrystals can be finely tuned through controlled morphology and size. However, this can be challenging for metastable nanostructures that require harsh synthesis conditions, such as high temperatures. Here, we present a method for preparing large ε-FeO nanorods that are not affected by magnetic relaxation.
View Article and Find Full Text PDFJ Food Sci
September 2025
College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China.
To address post-harvest issues of litchi, including browning, water loss, and nutrient degradation, a moisture microenvironment-regulating electro spun membrane was prepared by incorporating hydrophobic carnauba wax (CW)@nano silica (SiO) composite powder into a polyethylene terephthalate (PET) matrix via electro spinning. The dynamic water penetration equilibrium was evaluated by monitoring the water vapor absorption of the electrospun membrane within 12 h, while the effects of CW@SiO on the micro-structure, mechanical properties, hydrophobicity, and thermal stability were investigated. Results showed that the tensile strength of the PET-2.
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