Preparation of highly emissive, thermally stable, <scp>UV</scp>‐cured polysilsesquioxane/ZnO nanoparticle composites

Jeon, Hyeonyeol; Lee, Albert S.; Kim, Hyunji; Cho, So-Hye; Baek, Kyung‐Youl; Hwang, Seung Sang

doi:10.1002/app.42333

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…Moreover, we were able to observe that the cross-linked LPMA64 coating shell on alumina was very smooth with no signs of aggregation. This was attributed to presence of Si–O–Si backbone and Si–OH end groups in LPMA64, , forming electrostatic interactions with the surface of the alumina particles for exceptional binder/filler interface, whereas the high molecular weight ( M w = 43 000) and organic functional group composition allowed impeccable solubility and thus processability.…”

Section: Resultsmentioning

confidence: 99%

Lithium Dendrite Suppression with UV-Curable Polysilsesquioxane Separator Binders

Lee

et al. 2016

ACS Appl. Mater. Interfaces

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For the first time, an inorganic-organic hybrid polymer binder was used for the coating of hybrid composites on separators to enhance thermal stability and to prevent formation of lithium dendrite in lithium metal batteries. The fabricated hybrid-composite-coated separators exhibited minimal thermal shrinkage compared with the previous composite separators (<5% change in dimension), maintenance of porosity (Gurley number ∼400 s/100 cm(3)), and high ionic conductivity (0.82 mS/cm). Lithium metal battery cell examinations with our hybrid-composite-coated separators revealed excellent C-rate and cyclability performance due to the prevention of lithium dendrite growth on the lithium anode even after 200 cycles under 0.2-5C (charge-discharge) conditions. The mechanism for lithium dendrite prevention was attributed to exceptional nanoscale surface mechanical properties of the hybrid composite coating layer compared with the lithium metal anode, as the elastic modulus of the hybrid-composite-coated separator far exceeded those of both the lithium metal anode and the required threshold for lithium metal dendrite prevention.

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Section: Resultsmentioning

confidence: 99%

Lithium Dendrite Suppression with UV-Curable Polysilsesquioxane Separator Binders

Lee

et al. 2016

ACS Appl. Mater. Interfaces

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“…Similarly, adding SiO 2 nanoparticles to LPSQs increased hydrophobicity and thermal resistance for UV-curable coatings [ 7 ]. ZnO-incorporated LPSQs were also reported for transparent and luminescent optoelectronic devices owing to their optical transparency feature and superior thermal properties of LPSQs [ 8 ]. These advantageous properties, along with the molecular size and high versatility of organic groups bound to the silsesquioxane matrix, can be further adapted or functionalized with lanthanide ions to develop luminescent probes and light emitting devices (LEDs).…”

Section: Introductionmentioning

confidence: 99%

Lanthanide and Ladder-Structured Polysilsesquioxane Composites for Transparent Color Conversion Layers

et al. 2023

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Ladder-type polysilsesquioxanes (LPSQs) containing phenyl as a high refractive index unit and cyclic epoxy as a curable unit were found to be excellent candidates for a transparent color conversion layer for displays due to being miscible with organic solvents and amenable to transparent film formation. Therefore, the LPSQs were combined with luminescent lanthanide metals, europium Eu(III), and terbium Tb(III), to fabricate transparent films with various emission colors, including red, orange, yellow, and green. The high luminescence and transmittance properties of the LPSQs–lanthanide composite films after thermal curing were attributed to chelating properties of hydroxyl and polyether side chains of LPSQs to lanthanide ions, as well as a light sensitizing effect of phenyl side chains of the LPSQs. Furthermore, Fourier-transform infrared (FT-IR) and X-ray photoelectron spectroscopy and nanoindentation tests indicated that the addition of the nanoparticles to the LPSQs moderately enhanced the epoxy conversion rate and substantially improved the wear resistance, including hardness, adhesion, and insusceptibility to atmospheric corrosion in a saline environment. Thus, the achieved LPGSG–lanthanide hybrid organic–inorganic material could effectively serve as a color conversion layer for displays.

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Preparation of functionalZnOnanoparticles and their application asUVphotosensitizer and reinforcing agent for waterborne polyurethane acrylate composite coating

Shen

Liu

et al. 2022

J of Applied Polymer Sci

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Functional inorganic ZnO nanoparticles (ZnO NPs) have been designed and prepared, used as UV photosensitizers and reinforcing agents applied to waterborne polyurethane acrylate (WPUA) composite coating. The ZnO NPs are modified by the silane coupling agent, and the WPUA@ZnO NP composite coatings photoinitiated with different ZnO NP contents are prepared, their structure and properties are characterized by FTIR, XRD, SEM, BET, TG, and pencil hardness tester. The UV absorption of the inorganic photosensitizer ZnO NPs and the organic photosensitizer 1-hydroxycyclohexyl phenone (184) in the composite coating is tested and analyzed separately by DRS UV-3600 spectrophotometer. Three fabric-based materials (cotton, PET, and PP) are dipped into the WPUA@184 composite emulsions and WPUA@ZnO NP composite emulsions, and their mechanical properties, water absorption and water contact angle (WCA) are tested. The results show that the absorbance of the WPUA@ZnO NP composite coating is 40.28% higher than that of the WPUA@184 composite coating. Compared with the PP-WPUA@184 coatings, the stress of the PP-WPUA@ZnO NP coatings increases by 41.19% and the strain increases by 34.39%. The water absorption of the cotton and PET coatings decreases under the three conditions. Their hydrophilicity and hydrophobicity are changed, and the fabric-based coatings can be tuned for interfacial properties.

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Preparation of highly emissive, thermally stable, UV‐cured polysilsesquioxane/ZnO nanoparticle composites

Cited by 5 publications

References 43 publications

Lithium Dendrite Suppression with UV-Curable Polysilsesquioxane Separator Binders

Lithium Dendrite Suppression with UV-Curable Polysilsesquioxane Separator Binders

Lanthanide and Ladder-Structured Polysilsesquioxane Composites for Transparent Color Conversion Layers

Preparation of functionalZnOnanoparticles and their application asUVphotosensitizer and reinforcing agent for waterborne polyurethane acrylate composite coating

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