Polymer-inorganic hybrid nanoparticles of various morphologies via polymerization-induced self assembly and sol–gel chemistry

2016 ◽  
Vol 7 (43) ◽  
pp. 6575-6585 ◽  
Author(s):  
Guo Hui Teo ◽  
Rhiannon P. Kuchel ◽  
Per B. Zetterlund ◽  
Stuart C. Thickett
Keyword(s):  
Self Assembly ◽  
Sol Gel ◽  
Hybrid Nanoparticles ◽  
Inorganic Hybrid ◽  
Silica Hybrid

The preparation of polymer-silica hybrid nanoparticles of various morphologies is reported.

scholarly journals Design of Highly Adhesive and Water-Resistant UV/Heat Dual-Curable Epoxy–Acrylate Composite for Narrow Bezel Display Based on Reactive Organic–Inorganic Hybrid Nanoparticles

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2178
Author(s):  
Jun Hyup Lee
Keyword(s):  
Adhesion Strength ◽  
Sol Gel ◽  
Hybrid Nanoparticles ◽  
Epoxy Acrylate ◽  
Inorganic Hybrid ◽  
Low Viscosity ◽  
Information Displays ◽  
Heat Curing ◽  
High Adhesion ◽  
Acrylate Resin

To attain the narrow bezel characteristic of information displays, functional sealing composite materials should possess high adhesion strength and water barrier performance due to their narrow line widths. In this study, highly adhesive UV/heat dual-curable epoxy–acrylate composites with outstanding water-resistant performance have been proposed using photoreactive organic–inorganic hybrid nanoparticles that can react with an acrylate resin, creating a crosslinked nanoparticle network within the sealing composite. The hybrid nanoparticles consisted of reactive methacrylate groups as a shell and an inorganic core of silica or aluminum oxide, and were facilely synthesized through sol–gel reaction and chemisorption process. The curing characteristics, adhesive strength, and moisture permeability of the proposed sealing composite have been compared to those of a conventional epoxy–acrylate composite containing inorganic silica particles. The composites including hybrid nanoparticles exhibited high UV and heat curing ratios owing to the numerous methacrylate groups on the nanoparticle surface and high compatibility with organic resins. Moreover, the proposed sealing composite showed high adhesion strength and extremely low water permeability due to the creation of densely photocrosslinked network with matrix resins. In addition, the sealing composite exhibited excellent narrow dispensing width as well as relatively low viscosity, suggesting the potential application in narrow bezel display.

Novel Organic-Inorganic Hybrid Nanoparticles as Non-Viral Gene Vector

2008 ◽  
Vol 47-50 ◽  
pp. 1319-1322
Author(s):  
Yang Zhao ◽  
Pei Yin ◽  
Zu Yong Wang ◽  
Lei Ren ◽  
Qi Qing Zhang
Keyword(s):  
Gene Therapy ◽  
Encapsulation Efficiency ◽  
Sol Gel ◽  
Hybrid Nanoparticles ◽  
Viral Gene ◽  
Gene Vector ◽  
Inorganic Hybrid ◽  
Sol Gel Process ◽  
Gene Vectors

Novel hybrid biomaterial of gelatin-siloxane nanoparticles (GS NPs), with positive surface potential and lower cytotoxicity, was synthesized through a 2-step sol-gel process. The pDNA-GS NPs complex was formulated with high encapsulation efficiency, and exhibited and efficient transfection in vitro. We thus envision that the GS NPs material could serve as non-viral gene vectors for gene therapy.

Advanced Organic-inorganic Hybrid Coatings Having Both High Gas Barrier Properties and Abrasion Resistance

2006 ◽  
Vol 951 ◽  
Author(s):  
Katsunori Nishiura ◽  
Toshihiko Takaki ◽  
Makoto Nakaura
Keyword(s):  
Polymer Films ◽  
Abrasion Resistance ◽  
Sol Gel ◽  
Barrier Properties ◽  
Silica Content ◽  
Hybrid Coatings ◽  
Gas Barrier ◽  
Inorganic Hybrid ◽  
Gas Barrier Properties ◽  
Silica Hybrid

ABSTRACTIt is important to develop flexible transparent polymer films having high gas barrier properties and abrasion resistance because new applications involving transparent polymer films for flat panel displays require these properties. We report on organic-inorganic hybrid coatings of polyvinylalcohol (PVA)/polyacrylicacid (PAA)-silica, which have high gas barrier properties almost equivalent to those achieved by the dry coating process. The hybrid coatings were prepared by the sol-gel reaction of alkoxysilane in a PVA/PAA aqueous solution. In order to obtain transparent coating films, 3-aminopropyltrimethoxysilane (APTMOS) was used as a compatibilizer in the sol-gel reaction of tetramethoxysilane (TMOS). No structure could be seen in the TEM of the cross-sectional coating layer, indicating that polymers and silica were mixed homogeneously. PVA/PAA-silica hybrid coatings were shown to have excellent abrasion resistance based on the ΔHaze index. O2 permeability of PVA/PAA-silica hybrid coatings evaluated by MOCON under the conditions of 23°C, 90% RH was lower than that of PVA/PAA polymer coating, which suggests that silica affects the barrier property of the hybrid coating in humid conditions. Furthermore, O2 permeability decreased as silica content increased in the coatings. Unexpectedly, high gas barrier properties appeared when the silica content exceeded 50 wt%. From the result of element distribution analysis measured by EF-TEM, it was confirmed that phase separation occurred between PVA/PAA and silica on a nanometer scale and silica forms continuous structures, which are considered to suppress O2 permeability.

scholarly journals Self-Assembly of Au-Fe3O4 Hybrid Nanoparticles Using a Sol–Gel Pechini Method

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6943
Author(s):  
Jesus G. Ovejero ◽  
Miguel A. Garcia ◽  
Pilar Herrasti
Keyword(s):  
Self Assembly ◽  
Pechini Method ◽  
Sol Gel ◽  
Reaction Times ◽  
Alkaline Media ◽  
Hybrid Nanoparticles ◽  
Self Assembling ◽  
Transmission Electron ◽  
Ir Transmission ◽  
Size And Morphology

The Pechini method has been used as a synthetic route for obtaining self-assembling magnetic and plasmonic nanoparticles in hybrid silica nanostructures. This manuscript evaluates the influence of shaking conditions, reaction time, and pH on the size and morphology of the nanostructures produced. The characterization of the nanomaterials was carried out by transmission electron microscopy (TEM) to evaluate the coating and size of the nanomaterials, Fourier-transform infrared spectroscopy (FT-IR) transmission spectra to evaluate the presence of the different coatings, and thermogravimetric analysis (TGA) curves to determine the amount of coating. The results obtained show that the best conditions to obtain core–satellite nanostructures with homogeneous silica shells and controlled sizes (<200 nm) include the use of slightly alkaline media, the ultrasound activation of silica condensation, and reaction times of around 2 hours. These findings represent an important framework to establish a new general approach for the click chemistry assembling of inorganic nanostructures.

Fusion peptide functionalized hybrid nanoparticles for synergistic drug delivery to reverse cancer drug resistance

2017 ◽  
Vol 5 (24) ◽  
pp. 4697-4704 ◽  
Author(s):  
Jin-Long Wu ◽  
Xiao-Yan He ◽  
Bo-Ya Liu ◽  
Meng-Qing Gong ◽  
Ren-Xi Zhuo ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Self Assembly ◽  
Drug Delivery Systems ◽  
Fusion Peptide ◽  
Hybrid Nanoparticles ◽  
Cancer Drug ◽  
Inorganic Hybrid ◽  
Assembly Strategy ◽  
Cancer Drug Resistance ◽  
Functional Peptides

A facile self-assembly strategy was developed to decorate polymer/inorganic hybrid nano-sized drug delivery systems with functional peptides.

scholarly journals Organic-Inorganic Hybrid Polymers as Adsorbents for Removal of Heavy Metal Ions from Solutions: A Review

2021 ◽  
Author(s):  
Babak Samiey ◽  
Chil-Hung Cheng ◽  
Jiangning Wu
Keyword(s):  
Heavy Metals ◽  
Self Assembly ◽  
Heavy Metal Ions ◽  
Sol Gel ◽  
Interpenetrating Networks ◽  
Hybrid Polymers ◽  
Inorganic Hybrid ◽  
Synthesis Conditions ◽  
The Past ◽  
Nanobuilding Blocks

Over the past decades, organic-inorganic hybrid polymers have been applied in different fields, including the adsorption of pollutants from wastewater and solid-state separations. In this review, firstly, these compounds are classified. These compounds are prepared by sol-gel method, self-assembly process (mesopores), assembling of nanobuilding blocks (e.g., layered or core-shell compounds) and as interpenetrating networks and hierarchically structures. Lastly, the adsorption characteristics of heavy metals of these materials, including different kinds of functional groups, selectivity of them for heavy metals, effect of pH and synthesis conditions on adsorption capacity, are studied.

Synthesis of Polymer/Silica Hybrid Nanocomposites Prepared by the Sol-Gel Method

2007 ◽  
Vol 124-126 ◽  
pp. 1129-1132
Author(s):  
Ji Kyung Kim ◽  
Seong Soo Park ◽  
Bong Ki Ryu ◽  
Hong Chae Park ◽  
Seog Young Yoon
Keyword(s):  
Sol Gel ◽  
Hybrid Structure ◽  
Hybrid Nanocomposites ◽  
Inorganic Hybrid ◽  
Gel Method ◽  
Sol Gel Method ◽  
Polymeric Networks ◽  
Sol Gel Process ◽  
Average Size ◽  
Silica Hybrid

The organic-inorganic hybrid nanocomposites were successfully obtained by the sol-gel process with tetraethylorthosilicate (TEOS) as an inorganic networking precursor and 2-hydroxyethylmethacrylate (HEMA) as the nonsurfactant template in the presence of benzil initiator. The characteristics of the obtained hybrid were examined by means of TGA, FTIR, SEM, and TEM. The synthesized HEMA/SiO2 hybrid was nearly transparent, monolithic, and monodispersed with the average size of 25 nm. It was found that the hybrid structure could be defined by intertwining organic and inorganic polymeric networks.

scholarly journals Organic-Inorganic Hybrid Polymers as Adsorbents for Removal of Heavy Metal Ions from Solutions: A Review

2021 ◽  
Author(s):  
Babak Samiey ◽  
Chil-Hung Cheng ◽  
Jiangning Wu
Keyword(s):  
Heavy Metals ◽  
Self Assembly ◽  
Heavy Metal Ions ◽  
Sol Gel ◽  
Interpenetrating Networks ◽  
Hybrid Polymers ◽  
Inorganic Hybrid ◽  
Synthesis Conditions ◽  
The Past ◽  
Nanobuilding Blocks

Over the past decades, organic-inorganic hybrid polymers have been applied in different fields, including the adsorption of pollutants from wastewater and solid-state separations. In this review, firstly, these compounds are classified. These compounds are prepared by sol-gel method, self-assembly process (mesopores), assembling of nanobuilding blocks (e.g., layered or core-shell compounds) and as interpenetrating networks and hierarchically structures. Lastly, the adsorption characteristics of heavy metals of these materials, including different kinds of functional groups, selectivity of them for heavy metals, effect of pH and synthesis conditions on adsorption capacity, are studied.

UV Curable Organic-Inorganic Hybrid Materials

2000 ◽  
Vol 628 ◽  
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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