Evaluation of Sealing Properties to LED Light Emitting Substrate of Organic-inorganic Hybrid Materials Composed of Polysilsesquioxane with Thiol Group

Novel organic-inorganic hybrid materials were developed as LED sealants. Polysilsesquioxane with an -SH group (PSQ-SH) and acrylic monomer were selected as the inorganic and organic components, respectively. Trimethylolpropane trimethacrylate (TRIM), which is a trifunctional monomer, was selected as an acrylic monomer, and curing of the material was performed by the thiol-ene reaction. The LED was sealed using the prepared PSQ-SH/TRIM hybrid material (PTH), and a light emission test was performed. However, cracks occurred in the hybrid material during lighting. Therefore, ditrimethylol propane tetraacrylate (DTMPTA), which is a tetrafunctional monomer, was selected for the first time to prepare a PSQ-SH/DTMPA hybrid material (PDH) in order to enhance the strength and heat resistance of the material. The characteristics of the novel PDH were evaluated and compared with those of PTH. Specifically, the heat resistance was evaluated by confirming the onset temperature of weight reduction using thermogravimetry-differential thermal analyzer (TG-DTA) analysis, and the mechanical strength was also evaluated by bonding the glass substrates with a hybrid material and measuring the sealing strength. In conclusion, it was possible to suppress crack generation during lighting by using PDH instead of PTH in the light emission test.

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Organic–Inorganic Hybrid Materials

Polymers ◽

10.3390/polym13010086 ◽

2020 ◽

Vol 13 (1) ◽

pp. 86

Author(s):

Jesús-María García-Martínez ◽

Emilia P. Collar

Keyword(s):

Hybrid Materials ◽

Hybrid Material ◽

International Union ◽

Applied Chemistry ◽

Inorganic Hybrid ◽

Organic Components ◽

Intimate Mixture ◽

Inorganic Components

According to the IUPAC (International Union of Pure and Applied Chemistry), a hybrid material is that composed of an intimate mixture of inorganic components, organic components, or both types of components which usually interpenetrate on scales of less than 1 μm [...]

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Negative Thermal Quenching of Efficient White‐Light Emission in a 1D Ladder‐Like Organic/Inorganic Hybrid Material

Advanced Optical Materials ◽

10.1002/adom.201900763 ◽

2019 ◽

Vol 7 (20) ◽

pp. 1900763 ◽

Cited By ~ 7

Author(s):

Hamdi Barkaoui ◽

Haitham Abid ◽

Szymon Zelewski ◽

Joanna Urban ◽

Michal Baranowski ◽

...

Keyword(s):

White Light ◽

Hybrid Material ◽

Light Emission ◽

Thermal Quenching ◽

White Light Emission ◽

Inorganic Hybrid ◽

Inorganic Hybrid Material

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Fabrication of transparent polymer-inorganic hybrid material

MRS Proceedings ◽

10.1557/proc-876-r8.45 ◽

2005 ◽

Vol 876 ◽

Author(s):

S. Li ◽

M. S. Toprak ◽

Y. S Jo ◽

D. K. Kim ◽

M. Muhammed

Keyword(s):

Hybrid Materials ◽

Hybrid Material ◽

Zinc Acetate ◽

Zinc Acetate Dihydrate ◽

Sol Gel ◽

Shielding Effect ◽

Complexing Agent ◽

Inorganic Hybrid ◽

Zinc Compound

AbstractPolymer-inorganic hybrid materials composed of polymethyl methacrylate (PMMA) and zinc compounds were prepared by sol-gel in-situ transition polymerization of zinc complex in PMMA matrix. Zinc acetate dihydrate dissolved in ethanol was used as the inorganic precursor. Monoethanolamine (MEA) acted as a complexing agent to control the hydrolysis of zinc acetate to produce a zinc compound network, and then PMMA, formed in-situ through a radical polymerization, were chemically bonded to the forming zinc compound network to realize a hybrid material. Transparent homogenous hybrid materials with slight colours from pink to yellow were fabricated by varying the composition. TEM, FT-IR were employed to investigate structural and physical properties. The UV-shielding effect was evaluated by UV-VIS. The low content of zinc (around 0.02 wt%) and the fine particle size rendered it visibly transparent and capable of greatly attenuating UV radiation in the full UV range.

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Organic / Inorganic Hybrid Material for Coating on Metals

MRS Proceedings ◽

10.1557/proc-734-b9.57 ◽

2002 ◽

Vol 734 ◽

Cited By ~ 1

Author(s):

Zhexiong Tang ◽

Neil Alvarez ◽

Sze Yang

Keyword(s):

Hybrid Material ◽

Molecular Layer ◽

Nano Particles ◽

Organic Component ◽

Layer By Layer ◽

Hybrid Particles ◽

Inorganic Hybrid ◽

Water Dispersible ◽

Glass Substrates ◽

Glass Surfaces

ABSTRACTIn this paper, we present the syntheses of nano particles of organic / inorganic hybrid for coating on metal or glass surfaces. The organic component is a π-conjugated polymer, polyaniline. The inorganic component is a metal oxide, e.g., cerium oxide. Since the organic component is a water-dispersible polymeric complex of polyaniline and poly(acrylic acid), the hybrid particles are also dispersed in water. The synthesis of the organic / inorganic composite is described. The water dispersible hybrid material was coated on aluminum and glass substrates using a molecular layer-by-layer coating process.

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Planar refractive index patterning through microcontact photo-thermal annealing of a printable organic/inorganic hybrid material

Materials Horizons ◽

10.1039/d1mh01366a ◽

2021 ◽

Author(s):

Natalie Stingelin ◽

Stefan Bachevillier ◽

Hua-Kang Yuan ◽

Kornelius Tetzner ◽

Donal Bradley ◽

...

Keyword(s):

Refractive Index ◽

Titanium Oxide ◽

Hybrid Materials ◽

Hybrid Material ◽

Poly Vinyl Alcohol ◽

Refractive Index Gradient ◽

Index Structures ◽

Proof Of Concept ◽

Inorganic Hybrid ◽

Index Gradient

We demonstrate proof-of-concept refractive-index structures with large refractive-index-gradient profiles, using a micro-contact photothermal annealing (CPA) process to pattern organic/inorganic hybrid materials comprising titanium oxide hydrate within a poly(vinyl alcohol) binder....

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UV Curable Organic-Inorganic Hybrid Materials

MRS Proceedings ◽

10.1557/proc-628-cc6.14 ◽

2000 ◽

Vol 628 ◽

Cited By ~ 1

Author(s):

Guang-Way Jang ◽

Ren-Jye Wu ◽

Yuung-Ching Sheen ◽

Ya-Hui Lin ◽

Chi-Jung Chang

Keyword(s):

Hybrid Materials ◽

Colloidal Silica ◽

Sol Gel ◽

Solution Ph ◽

Uv Curable ◽

Inorganic Hybrid ◽

Degradation Temperature ◽

Sol Gel Process ◽

The Stability ◽

Thermal Degradation Temperature

This work successfully prepared an UV curable organic-inorganic hybrid material consisting of organic modified colloidal silica. Applications of UV curable organic-inorganic hybrid materials include abrasion resistant coatings, photo-patternable thin films and waveguides. Colloidal silica containing reactive functional groups were also prepared by reacting organic silane and tetraethyl orthosilicate (TEOS) using sol-gel process. In addition, the efficiency of grafting organic moiety onto silica nanoparticles was investigated by applying TGA and FTIR techniques. Experimental results indicated a strong interdependence between surface modification efficiency and solution pH. Acrylate-SiO2 hybrid formation could result in a shifting of thermal degradation temperature of organic component from about 200°C to near 400°C. In addition, the stability of organic modified colloidal silica in UV curable formula and the physical properties of resulting coatings were discussed. Furthermore, the morphology of organic modified colloidal silica was investigated by performing TEM and SEM studies‥

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