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Sub-5 Ångstrom Porosity Tuning in Calixarene-Derived Porous Liquids via Supramolecular Complexation Construction.
Angew Chem Int Ed Engl
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Oak Ridge National Laboratory, Chemical Sciences Division, UNITED STATES OF AMERICA.
Precise sub-Ångstrom-level porosity engineering, which is appealing in gas separations, has been demonstrated in solid carbon, polymer, and framework materials but rarely achieved in the liquid phase. In this work, a gas molecular sieving effect in the liquid phase at sub-5 Ångstrom scale is created via sophisticated porosity tuning in calixarene-derived porous liquids (PLs). Type II PLs are constructed via supramolecular complexation between the sodium salts of calixarene derivatives and crown ether solvents.
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January 2025
Soft Matter and Nanomaterials Laboratory, Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, India.
Incorporating nanomaterials into hydrogels allows for the creation of versatile materials with properties that can be precisely tailored by manipulating their nanoscale structures, leading to a wide range of bulk properties. Investigating the structural and property characteristics of composite hydrogels is crucial in tailoring their performance for specific applications. This study focuses on investigating the correlation between the structural arrangement and properties of a composite hydrogel of thermoresponsive polymer, gelatin, and light-responsive antimicrobial porous gold nanorods (PAuNRs).
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Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
Quantum magnetic materials can provide explicit realizations of paradigm models in quantum many-body physics. In this context, SrCu_{2}(BO_{3})_{2} is a faithful realization of the Shastry-Sutherland model for ideally frustrated spin dimers, even displaying several of its quantum magnetic phases as a function of pressure. We perform inelastic neutron scattering measurements on SrCu_{2}(BO_{3})_{2} at 5.
View Article and Find Full Text PDFAll-solid-state batteries designed for operation under extreme cold conditions.
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School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China.
A pressing need for enhancing lithium-ion battery (LIB) performance exists, particularly in ensuring reliable operation under extreme cold conditions. All-solid-state batteries (ASSBs) offer a promising solution to the challenges posed by conventional LIBs with liquid electrolytes in low-temperature environments. In this study, leveraging the benefits of amorphous solid-state electrolytes (SSEs) xLiN-TaCl (1 ≤ 3x ≤ 2), we develop ASSBs capable of functioning effectively under extreme cold conditions.
View Article and Find Full Text PDFA strategy to reduce thermal expansion and achieve higher mechanical properties in iron alloys.
Nat Commun
January 2025
Department of Physical Chemistry, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, China.
Article Synopsis
- Iron alloys, particularly steels and magnetic materials, are crucial in various industries but struggle with high thermal expansion, limiting their precision applications.
- A new strategy has been developed to embed a nano-scale negative thermal expansion (NTE) phase within the iron matrix, effectively reducing the thermal expansion coefficient of an example alloy (Fe-Zr10-Nb6) to about half of standard iron.
- This alloy demonstrates impressive mechanical properties, achieving 1.5 GPa compressive strength and 17.5% ultimate strain, while the NTE phase helps counterbalance the thermal expansion, indicating a promising method for creating low thermal expansion iron alloys with enhanced performance.
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