Flowable polysilsesquioxanes as robust solvent-free optical hard coatings

Choi, Min Hyuk; Seo, Jin Young; Ahn, Jungbin; Woo, Han Young; Cho, Sangho; Hwang, Seung Sang; Lee, Albert S.; Baek, Kyung‐Youl

doi:10.1016/j.reactfunctpolym.2021.105030

Cited by 7 publications

(8 citation statements)

References 34 publications

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“…After the introduction of the UiO-66 catalyst to this soft PMB 12 film, the mechanical strength of PMB 12 composite films was increased to reach 0.26 GPa modulus for PMB 12 _40. Considering that the commercially available acrylate-based protective resin possesses 0.25 GPa reduced modulus, it demonstrates that the mechanical strength of PMB copolymers was nearly suitable in actual protective coating application …”

Section: Resultsmentioning

confidence: 98%

“…Considering that the commercially available acrylate-based protective resin possesses 0.25 GPa reduced modulus, it demonstrates that the mechanical strength of PMB copolymers was nearly suitable in actual protective coating application. 41 3.3. Evaluation of the Catalytic Ability of UiO-66 and PMB Composites.…”

Section: Fabrication and Characterization Of Composite Filmsmentioning

confidence: 99%

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Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)–Branched Poly(ethyleneimine) Copolymer and Metal–Organic Framework Composites

Seo

Choi

Lee

et al. 2022

ACS Appl. Mater. Interfaces

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Defense against chemical warfare agents (CWAs) is regarded as a top priority for the protection of humanity, but it still depends on physical protection with severe limitations such as residual toxicity and post-treatment requirement. In this study, a strategically designed functional polymeric substrate was composited with a metal−organic framework catalyst to remove toxicity immediately. A series of PMMA-BPEI copolymers exhibited high processability as a coating and accelerated the catalytic activity of Zr(IV)-based metal−organic framework catalysts (UiO-66). Among them, PMB12_40 composite coating on a cotton fabric, containing a PMMA-BPEI copolymer (PMMA/BPEI = 1/2) and 40% of UiO-66 catalyst, can efficiently decompose nerve agent simulants (methyl-paraoxon) under both liquid phase (t 1/2 = 0.14 h) and humidified (t 1/2 = 4.8 h) conditions. Moreover, a real agent, GD, was decomposed 100% by PMB12_40 in 4 h at 25 °C and 65% relative humidity. On the basis of superior catalytic activity, the PMB composites are anticipated to be a potential material for active chemical protection coating.

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Section: Resultsmentioning

confidence: 98%

Section: Fabrication and Characterization Of Composite Filmsmentioning

confidence: 99%

Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)–Branched Poly(ethyleneimine) Copolymer and Metal–Organic Framework Composites

Seo

Choi

Lee

et al. 2022

ACS Appl. Mater. Interfaces

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“…Recent advancements in this field include the solvent-free synthesis of LPSQ using only monomers and H 2 O (see above). 169…”

Section: Characterization Of Lpsqmentioning

confidence: 99%

“…3e, it is observed that both phenyl-based POSS and LPSQ exhibit no weight loss up to 380 1C, and it can be noted that the T d5 of LPSQ is approximately 60 1C higher than that of POSS. 35 Furthermore, its double-stranded structure ensures a consistent intrachain distance, while the interchain distance can be varied by incorporating various organic functional groups 95,169 (Fig. 4a).…”

Section: Advantages Of Lpsqmentioning

confidence: 99%

Recent progress in ladder-like polysilsesquioxane: synthesis and applications

Kim,

Park,

Kwon

2024

Mater. Chem. Front.

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“…Inorganic–organic materials such as polysilsesquioxanes (PSQs), mainly synthesized via monomer polymerization of trialkoxysilyl groups, are well-known for their strong cross-linking properties with oxygen to a silicon bond. Their structure can range from the cage- to ladder-like [ 1 , 2 , 3 , 4 , 5 ]. Due to uncontrolled side reactions and difficulties in achieving high molecular weights, ladder polysilsesquioxanes (LPSQs) with a Si–O–Si backbone are challenging to synthesize.…”

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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Flowable polysilsesquioxanes as robust solvent-free optical hard coatings

Cited by 7 publications

References 34 publications

Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)–Branched Poly(ethyleneimine) Copolymer and Metal–Organic Framework Composites

Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)–Branched Poly(ethyleneimine) Copolymer and Metal–Organic Framework Composites

Recent progress in ladder-like polysilsesquioxane: synthesis and applications

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

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