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In this manuscript, we present the successful attachment of crown ether moieties onto fluoropolymer surfaces, via the combination of radiation-induced graft polymerization and a subsequent surface Kabachnik-Fields three-component reaction. The obtained crown ether-tethered fluoropolymer films exhibited an ammonium cation capturing ability, owing to the host-guest interactions (i.e., hydrogen bonding) between the surface-anchored crown ethers and the guest ammonium cations.
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http://dx.doi.org/10.3390/polym11081337 | DOI Listing |
Langmuir
August 2025
Department of Radiology and Hebei Key Laboratory of Precise Imaging of Inflammation-Related Tumors, Basic Research Key Laboratory of General Surgery for Digital Medicine, Affiliated Hospital of Hebei University, Baoding 071000, China.
Dental restorative materials often suffer from premature failure due to wear caused by oral activities, such as brushing and chewing, which remains a critical challenge in clinical practice. To address this issue, we developed a friction-induced PTFE coating (FIPC) technology that constructs transfer films by the friction of PTFE balls and applied it to a novel zirconia/silica (ZrO/SiO) gel filler-modified photocurable composite resin. Optical micrographs and Raman spectroscopy results demonstrate that FIPC can be prepared on-demand without damaging the substrate surface.
View Article and Find Full Text PDFChemphyschem
August 2025
Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong SAR, 999077, China.
2D piezoelectric covalent organic frameworks (2D p-COFs) represent a transformative class of materials merging structural precision, symmetry breaking, dynamic covalent chemistry, and electromechanical functionality. Unlike inorganic piezoelectrics (e.g.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
Nanostructure Lab, Department of Physics, The Gandhigram Rural Institute-Deemed to be University, Gandhigram-624 302, Tamil Nadu, India. Electronic address:
In this work, zinc oxide (ZnO) nanoparticles, polyvinylidene fluoride (PVDF), and chitosan have been employed to develop a hybrid bio-nanocomposite-based piezoelectric sensor. With various chitosan concentrations, the piezoelectric characteristics of the resultant ZnO/PVDF/chitosan composites were systematically investigated. XRD, FTIR, Raman spectroscopy, SEM, TEM, and XPS investigations verified that ZnO was effectively incorporated within the polymer matrix after its fabrication using the hydrothermal technique.
View Article and Find Full Text PDFSoft Matter
August 2025
Research Center for Negative Emissions Technologies, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
This study examines the CO transport behavior of poly(fluoroalkyl acrylate) (PFA) and poly(fluoroalkyl methacrylate) (PFMA) thin films. Using time-resolved attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) and a quartz crystal microbalance (QCM), we quantified CO diffusivity and solubility, linking these properties to the polymer side-chain architecture. The results demonstrate that PFMA exhibits lower CO permeability than PFA at comparable side-chain lengths, owing to restricted chain mobility caused by the α-methyl backbone of PFMA.
View Article and Find Full Text PDFWater Res
September 2025
College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, United States. Electronic address:
Piezocatalysis has emerged as an attractive technology for environmental remediation by the effective transformation of mechanical energy into electrical energy. Herein, copper nanosheets-modified polyvinylidene fluoride films (CuNS/PVDF) are synthesized via a facile wet-chemistry route and exhibit a much-enhanced piezoelectric property, as compared to pristine PVDF. This is ascribed to CuNS that increases the stress response point and Young's modulus of the PVDF host.
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