Synthesis and characterization of nano‐sized epoxy oligosiloxanes for fabrication of transparent nano hybrid materials

Yang, SeungCheol; Kim, Jeong Hwan; Jin, Jung Ho; Bae, Byeong‐Soo

doi:10.1002/polb.21680

Cited by 13 publications

(11 citation statements)

References 25 publications

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“…Particularly, propylene oxide (PO) and styrene oxide of cyclic ethers have been polymerized either by cationic catalysts or anionic catalysts, and also, more selective catalyst systems and their products have been elucidated by different spectroscopic techniques 3–8. Inoue7 and Chisholm et al8 suggested that the polymerization of PO initiated with porphyrin aluminum chloro complex proceeded as follows, with the alkoxide complex as the growing species: 3‐Glycidyloxypropyltrimethoxysilane (GPTS) is one of the most commonly used precursors for the preparation of inorganic–organic hybrid polymers, which are used, for example, for hard coatings of organic polymers, contact lens materials in the optical industry, electronics, membranes, sensors, nanoimprinting, wave guides, and biology 9–12…”

Section: Introductionmentioning

confidence: 99%

Polymerization of 3‐glycidyloxypropyltrimethoxysilane with different catalysts

Kayan

2011

J of Applied Polymer Sci

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Polymerization reactions of 3-glycidyloxypropyltrimethoxysilane (GPTS) were carried out by different catalysts, potassium hydroxide, potassium tertbutoxide, and tetraphenylporphyrin aluminum chloride (TPP-AlCl), and tetrafluorophthalate zironium isopropoxide complex. Polymer samples obtained from the ringopening polymerization of GPTS were characterized by Fourier transform infrared spectroscopy, NMR spectroscopy, electrospray ionization mass spectroscopy, and gel permeation chromatography.

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Section: Introductionmentioning

confidence: 99%

Polymerization of 3‐glycidyloxypropyltrimethoxysilane with different catalysts

Kayan

2011

J of Applied Polymer Sci

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“…In particular, organic-inorganic hybrid materials realized via a nonhydrolytic sol-gel process, where inorganic networks are formed by a condensation reaction without water, can be easily synthesized and exhibit controllable characteristics with a suitable selection of precursors and optimization of processing parameters. [12][13][14][15][16] Moreover, the absence of water molecules and hydroxyl groups in non-hydrolytic sol-gel derived materials can provide higher thermal and chemical stability relative to hydrolytic sol-gel derived materials. Exploiting these advantages, Jung et al reported high performance barrier coating layers using non-hydrolytic sol-gel synthesized hybrid materials (hybrimers).…”

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confidence: 99%

Effects of Sol-Gel Organic-Inorganic Hybrid Passivation on Stability of Solution-Processed Zinc Tin Oxide Thin Film Transistors

Seo

Yang

et al. 2011

Electrochem. Solid-State Lett.

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We fabricated solution-processed zinc tin oxide (ZTO) TFTs with sol-gel organic-inorganic hybrid passivation layers owing to their solution-processibility and good water and oxygen barrier property. The sol-gel organic-inorganic hybrid passivation layers reduce hysteresis of the TFTs without deterioration of performance. The gate bias stability and the environmental stability under high temperature and relative humidity are also improved compared to unpassivated and poly(methyl methacrylate) (PMMA) passivated TFTs.Metal oxide semiconductors have attracted considerable attention as the channel layer for thin film transistor (TFT) in displays. 1 Owing to their high electron mobility, good uniformity, and high transparency, oxide TFTs are considered the most promising devices for high performance and large area displays. However, for practical applications, the stability under long term bias stress should be guaranteed. The bias instability of oxide TFTs is attributed to not only charge trapping at the semiconductor/insulator interface but also the external molecules in the ambient atmosphere. [2][3][4][5] In particular, the adsorption/desorption of water and oxygen molecules on the back channel surface is the main reason for the bias instability of common devices with an inverted staggered structure.Oxide TFTs with various passivation layers such as SiO x , SiN x , AlO x , and poly(methyl methacrylate) (PMMA) exhibited improved bias stability due to effective protection from external molecules. [5][6][7][8][9] While inorganic passivation layers have excellent gas barrier properties, they are generally deposited on the oxide channel layer using sputtering, plasma enhanced chemical vapor deposition (PECVD), or e-beam evaporation, which accompany some notable disadvantages. Specially, transistor performance may be degraded by surface damage during film growth and high fabrication costs are inevitable. On the other hand, polymer passivation layers have advantages of a simple and low-cost solution process, but suffer from high permeability to gases. As an alternative, organic-inorganic hybrid materials synthesized by a sol-gel reaction are potentially good passivation layer candidates. 10,11 These materials offer solution-processibility and higher water and oxygen barrier properties than commercially available polymers, since they contain a highly condensed inorganic network with UV and/or thermal polymerizable organic functional groups. In particular, organic-inorganic hybrid materials realized via a nonhydrolytic sol-gel process, where inorganic networks are formed by a condensation reaction without water, can be easily synthesized and exhibit controllable characteristics with a suitable selection of precursors and optimization of processing parameters. 12-16 Moreover, the absence of water molecules and hydroxyl groups in non-hydrolytic sol-gel derived materials can provide higher thermal and chemical stability relative to hydrolytic sol-gel derived materials. Exploiting these advantages, Jung et al. reported high per...

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“…Figure 2b shows the 29 Si-NMR result of the EFS resin, revealing the condensation degree of siloxane bonds (SiOSi) in the organic-inorganic hybrid material. The degree of condensation was calculated by the following equation, [52] The degree of condensation…”

Section: Figure 1amentioning

confidence: 99%

Hierarchically Surface‐Textured Ultrastable Hybrid Film for Large‐Scale Triboelectric Nanogenerators

Lee

Wang

et al. 2020

Adv Funct Materials

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The supply of electrical power is indispensable in the internet of things (IoT) area. Triboelectric nanogenerators (TENGs) has been largely used as a power supply due to simple device structure and various possibilities of material selection. Although various surface modifications of TENG are utilized for improving the output performance of TENG, these methods have significant drawbacks of high-cost fabrication process, limited device size, and wearing out. Here, a mechanically robust TENG using a newly developed surface-textured glass fabric reinforced siloxane hybrid film (SGH film) is presented. The large-scale SGH film is cost-effectively fabricated via a simple roll-to-plate and UV curing process. The film is repeatedly duplicated over 100 times using one pre-treated substrate mold. SGH film exhibits superior thermal and mechanical stability, compared to other polymer films. Finally, surface textured TENG (THTENG) is achieved using extremely stable SGH film, resulting in enhanced output power compared to flat TENG and high durability during the 100 000 cycles of TENG operation.

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Synthesis and characterization of nano‐sized epoxy oligosiloxanes for fabrication of transparent nano hybrid materials

Cited by 13 publications

References 25 publications

Polymerization of 3‐glycidyloxypropyltrimethoxysilane with different catalysts

Polymerization of 3‐glycidyloxypropyltrimethoxysilane with different catalysts

Effects of Sol-Gel Organic-Inorganic Hybrid Passivation on Stability of Solution-Processed Zinc Tin Oxide Thin Film Transistors

Hierarchically Surface‐Textured Ultrastable Hybrid Film for Large‐Scale Triboelectric Nanogenerators

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