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An outstanding challenge for the field of metal-organic frameworks (MOFs) is structuring to form forms with greater useability. Reactive extrusion printing (REP) is a technique for the direct formation of films from their molecular components on-demand and on-location. Here we apply REP for the first time to zeolitic imidazolate frameworks (ZIFs) and study the interplay of solvent and molarity ratio on the phase distribution between ZIF-8 and ZIF-L in reactive printed films. Our results show that REP controllably directs phase formation between ZIF-L and ZIF-8 and that REP also gives control over crystal size and that high-quality ZIF-8 films, in particular, are produced in low-dispersity interconnected nanoparticulate form. Importantly, we show that REP is responsive to established surface-functionalization techniques to control important printing parameters of line width and thickness. This work expands the repertoire of REP to the important class of ZIFs.
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http://dx.doi.org/10.1021/acsami.4c08609 | DOI Listing |
J Agric Food Chem
September 2025
State Key Laboratory of Low Carbon Catalysis and Carbon Dioxide Utilization, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
In the context of the escalating shortage of global resources, mechanoenzymology has emerged as a transformative platform for the production of economically viable, high-value products. This innovative method employs mechanical force to drive enzyme-catalyzed reactions, demonstrating significant advantages in terms of green chemistry indicators, catalytic efficiency, and process sustainability. It has proven successful in various fields, including food processing, biopharmaceutical, and biomass resources development.
View Article and Find Full Text PDFChemSusChem
August 2025
Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
Low-crystallinity propylene-ethylene copolymer (PEC) thermoplastics exhibit creep in the melt and semicrystalline states. To enhance creep resistance while maintaining reprocessability, dynamic covalent cross-links are introduced through one-step, radical-based reactive processing to create covalent adaptable networks (CANs). During reactive processing, it is essential to suppress β-scission of propylene repeat units.
View Article and Find Full Text PDFMolecules
August 2025
University of Coimbra, CQC-IMS, Faculty of Pharmacy, 3000-548 Coimbra, Portugal.
The photochemistry of 1,3,4-oxadiazoles remains poorly understood, despite their recognized importance in medicinal chemistry and materials science. In this work, we report a detailed matrix-isolation study of 2-amino-5-(4-methoxyphenyl)-1,3,4-oxadiazole, combining low-temperature infrared spectroscopy with broadband UV photolysis and quantum chemical calculations. Theoretical analysis predicts the gas-phase molecule to exist exclusively as the amino tautomer, populating two nearly isoenergetic conformers (anti and syn) defined by the relative orientation of the amino and methoxy groups.
View Article and Find Full Text PDFTheriogenology
August 2025
Department of Animal Science, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea. Electronic address:
Heat stress is a critical environmental factor that disrupts porcine oocyte maturation and impairs embryonic development. This study investigated the protective role of Nobiletin under heat stress using an in vitro maturation model. Porcine cumulus-oocyte complexes (COCs) were cultured under control conditions (38.
View Article and Find Full Text PDFDrug Metab Dispos
July 2025
Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People's Republic of China. Electronic address:
Coptisine and worenine, isoquinoline alkaloids prevalent in traditional herbal medicines from Papaveraceae (eg, Corydalis Rhizoma) and Ranunculaceae (eg, Coptidis Rhizoma), exhibit significant pharmacologic effects, including cardioprotective and anticancer properties. However, little information is available concerning coptisine- or worenine-induced toxicity, particularly hepatotoxicity, and the underlying mechanisms. Coptisine and worenine contain methylenedioxyphenyl groups, which may be metabolized by cytochrome P450s (P450s) to form reactive metabolites and subsequently induce toxicity.
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