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Comparative Analysis of Conversion and Crosslinking Degree in Bulk-Fill, Monochromatic, and ORMOCER composites.
J Dent
January 2025
University of Saskatchewan, College of Dentistry. 107 Wiggins Rd, Saskatoon, SK, Canada. S7N 5E5. Electronic address:
Bulk-fill, monochromatic, and ORMOCER composites were introduced in restorative dentistry with the aim of reducing clinical time and/or alleviating contraction stresses at the interface between the tooth and restoration. While the conversion and immediate properties of these materials are comparable to conventional composites, studies evaluating their long-term properties and the structure of the polymer matrix are lacking. The objective of this study was to evaluate the degree of conversion and, indirectly, the crosslink density of conventional, bulk-fill, monochromatic, and ORMOCER resin composites.
View Article and Find Full Text PDFBifunctional lignin-based hydrogel membrane with enhanced structural stability for synergistic uranium uptake.
J Colloid Interface Sci
January 2025
College of Chemistry and Materials Engineering, Zhejiang A&F University, No. 666 Wusu Street, Hangzhou 311300 PR China. Electronic address:
Developing biomass-based adsorbents with superior uranium uptake performance is imperative yet challenging for the sustainable development of nuclear energy. Herein, we constructed a novel lignin-based adsorbent (DLP@PAO) with dual functional groups and enhanced structural stability via ingenious integration of lignin and polyamidoxime. The two-step modification strategy was innovatively employed to phosphorylate lignin, significantly enhancing the phosphorylation efficiency and achieving an over eight-fold increase in the U(VI) uptake capacity of lignin.
View Article and Find Full Text PDFConstructing an Injectable Multifunctional Antibacterial Hydrogel Adhesive to Seal Complex Interfaces Post-Dental Implantation to Improve Soft Tissue Integration.
Macromol Biosci
January 2025
Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Institute of Stomatological Research, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510062, China.
Soft tissue integration (STI) around dental implants determines their long-term success, and the key is to immediately construct a temporary soft tissue-like barrier to prevent bacterial invasion after implantation and then, promote STI. In response to this need, an injectable multi-crosslinked hydrogel (MCH) with abilities of self-healing, anti-swelling, degradability, and dry/wet adhesion to soft tissue/titanium is developed using gallic acid-graft-chitosan, oxidized sodium alginate, gelatin, and Cu with water and borax solution as solvents, whose properties can be controlled by adjusting its composition and ratio. MCH can not only immediately build a sealing barrier to block the bacterial invasion in the oral simulation environment but also deliver outstanding antibacterial efficacy through the synergism of trapping bacteria and releasing bactericidal agents such as chitosan, gallic acid, aldehyde, and Cu.
View Article and Find Full Text PDFScalable, Flexible, and UV-Resistant Bacterial Cellulose Composite Film for Daytime Radiative Cooling.
ACS Appl Mater Interfaces
January 2025
School of Chemistry and Materials Science, Jiangsu Key Laboratory of New Energy Devices & Interface Science, Nanjing University of Information Science & Technology, Ning-Liu Road 219, Nanjing 210026, China.
Radiative cooling, a passive cooling technology, functions by reflecting the majority of solar radiation (within the solar spectrum of 0.3-2.5 μm) and emitting thermal radiation (within the atmospheric windows of 8-13 μm and 16-20 μm).
View Article and Find Full Text PDFPhotothermally Cross-Linkable Polymeric Hole Transport Material Functionalized with Azide for High-Performance Quantum Dot Light-Emitting Diodes.
ACS Appl Mater Interfaces
January 2025
Department of Energy Science & Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 333, Techno Jungang Daero, Hyeonpung-Eup, Dalseong-Gun, Daegu 42988, Republic of Korea.
Poly[(9,9-dioctylfluorenyl-2,7-diyl)--(4,4'-(-(4-butylphenyl)))] (TFB) is a widely used hole transport material (HTM) in quantum dot light-emitting diodes (QLEDs). However, TFB-based solution-processed QLEDs face several challenges, including interlayer erosion, low hole mobility, shallow energy level of the highest occupied molecular orbital, and current leakage, which compromise the device efficiency and stability. To overcome these challenges, bromine and azide-based photothermally cross-linkable TFB derivatives, i.
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