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Solvent Effect on Antimicrobial Hydrophilic Xerogel Coating of Medicinal Leathers in Simulated Industrial Finishing Process.
Chempluschem
January 2025
NCSR Demokritos: Ethniko Kentro Ereunas Physikon Epistemon Demokritos, Institute of Physical Chemistry, Patriarchou Gregoriou and Neapoleos, Aghia Paraskevi, Attiki, 15310, Athens, GREECE.
The hydrophilic character and the protection against pathogen proliferation are the most pivotal characteristics of leathers intended for medical purposes. To achieve these goals, dispersions of TiO2 particles incorporating three different formulations of biomimetically synthesized silica xerogels were tested. Emphasis has been given to the role of single and dual solvents employed.
View Article and Find Full Text PDFSurface Engineered MoS-Based Novel Vertical Triboelectric Nanogenerator (V-TENG) for Wireless Information Processing.
Small
January 2025
Department of Condensed Matter and Materials Physics, S.N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata, 700106, India.
Self-sustaining mechanical energy harvesting devices are pivotal for developing durable energy-efficient systems, providing scalable and adaptable solutions to wearable technology. Triboelectric nanogenerators (TENGs) efficaciously convert ambient mechanical energy into usable electrical power to sustainably drive modern electronics. Surface and structural engineering is an avenue to boost TENGs' energy harvesting through modulating contact interfaces and charge transfer interactions between the constituent layers.
View Article and Find Full Text PDFDevelopment of pH-Responsive SA/PEGDA/AS-POSS Hydrogels via Michael Addition for Controlled Drug Release and Enhanced Mechanical Properties.
Chemistry
January 2025
Zhengzhou University of Light Industry, College of Materials Science and Chemical Engineering, Dongfeng Road, No. 5, 450002, Zhengzhou, CHINA.
In this study, thiolated sodium alginate (SA) and hydrophilic, polymerizable Janus-type polyhedral oligomeric silsesquioxane (AS-POSS) are synthesized by introducing thiol and sulfonic acid groups, respectively. A series of pH-responsive SA/PEGDA/AS-POSS nanocomposite hydrogels are successfully prepared through Michael addition reactions between the thiol groups of thiolated sodium alginate and the double bonds in the molecular chains of AS-POSS and poly(ethylene glycol) diacrylate (PEGDA). This reaction proceeds rapidly under physiological conditions without requiring initiators or catalysts.
View Article and Find Full Text PDFNanocrystals with Aggregate Anionic Structure Enable Ion Transport Decoupling of Chain Segment Movement in Poly(ethylene oxide) Electrolytes.
Angew Chem Int Ed Engl
January 2025
Nankai University, College of Chemistry, No.94 Weijin Road, 300071, Tianjin, CHINA.
All-solid-state polymer electrolytes are promising for lithium batteries, but Li+ transport in these electrolytes relies on amorphous chain segment movement, leading to low Li+ mobility and poor mechanical strength. Here we propose a novel Li+ transport mechanism mediated by PEO3:LiBF4 nanocrystals (NCPB) with the aggregate (AGG) anionic structure, which enables a change from amorphous to crystalline phase dominated ion transport in all-solid-state PEO/LiBF4 electrolyte. Experiments and simulations reveal that the interaction between Li+ and F in NCPB with AGG anionic structure simultaneously restricts anion transport and reorients anions within the free volume of NCPB, resulting in a three-coordination intermediate to facilitate Li+ transport.
View Article and Find Full Text PDFUnveiling the Li/Electrolyte Interface Behavior for Dendrite-Free All-Solid-State Lithium Metal Batteries by Operando Nano-Focus WAXS.
Adv Sci (Weinh)
January 2025
TUM School of Natural Sciences, Department of Physics, Chair for Functional Materials, Technical University of Munich, James-Franck-Str. 1, 85748, Garching, Germany.
Poly(ethylene oxide) (PEO)-based solid composite electrolytes suffer from poor conductivity and lithium dendrite growth, especially toward the metallic lithium metal anode. In this study, succinonitrile (SN) is incorporated into a PEO composite electrolyte to fabricate an electrode-compatible electrolyte with good electrochemical performance. The SN-doped electrolyte successfully inhibits the lithium dendrite growth and facilitates the SEI layer formation, as determined by the operando nanofocus wide-angle X-ray scattering (nWAXS), meanwhile, stably cycled over 500 h in Li/SN-PEO/Li cell.
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