Sol-gel coating films for optical and electronic application

2007 ◽  
pp. 1-49 ◽  
Author(s):  
Sumio Sakka
Keyword(s):  
Sol Gel ◽  
Coating Films ◽  
Electronic Application

Synthesis and Intermolecularly Mediated Assembly of Organic Pigment in Hybrid Coating Films

1998 ◽  
Vol 519 ◽  
Author(s):  
Y. Yan ◽  
Z. Duan ◽  
D.-G. Chen ◽  
S. Ray Chaudhuri
Keyword(s):  
Sol Gel ◽  
Hybrid Coating ◽  
Hypsochromic Shift ◽  
Hybrid Films ◽  
Coating Films ◽  
Organic Pigment ◽  
Inorganic Hybrid ◽  
Matrix Interactions ◽  
Sol Gel Process

AbstractThe insoluble, strongly hydrogen bonded organic pigment of 3,6-bis-(4-chlorphenyl)-l,4- diketopyrrolo [3,4-c] pyrrole was transiently blocked by adding carbamate groups, and consequently incorporated into organic-inorganic hybrid matrices by a sol-gel process. The homo- (pigment-pigment) and hetero-intermolecular (pigment-matrix) interactions were found to control both the assembly and dispersion of pigment molecules in the hybrid coating films. A weaker interaction between matrices and pigment molecules results in aggregation of the carbamate pigment in the methyl-silicate films. A stronger interaction forms a homogenous dispersion and coloration of the phenyl-silicate films. The as-prepared methyl- and phenylsilicate films doped with the organic pigment were distinguished by a morphology change and a blue (hypsochromic) shift in absorption from 550 to 460 nm. Thermal treatment can remove the carbamate groups and in-situ form the organic pigment in the hybrid films.

Surface Morphology of Anatase TiO2 Thin Film by Sol-Gel Method

2006 ◽  
Vol 517 ◽  
pp. 135-140 ◽  
Author(s):  
N. Al-Jufairi
Keyword(s):  
Sol Gel ◽  
Titanium Isopropoxide ◽  
Optical Microscope ◽  
Processing Route ◽  
Coating Process ◽  
Coating Films ◽  
Anatase Structure ◽  
Interferometric Technique ◽  
Structure Phase ◽  
Gel Processing

Sol-gel processing route has been used for the production of thin films from titanium isopropoxide (TIP). The surface properties and statistics results have been characterized by AFM; the coating process has been examined using SEM and optical microscope. The structure phase of TiO2 has been analyzed by XRD; the composition of TiO2 has been estimated through EDS; the thickness of film has been measured by polarized microscope in an interferometric technique. The coating films are always crystallined in the anatase structure with circular particles in nanometer size.

Properties of Nano-Hybrid Sol-Gel Materials Synthesized from Colloidal Silica-Silane Containing Epoxy Silane

2007 ◽  
Vol 336-338 ◽  
pp. 2278-2281 ◽  
Author(s):  
Moon Kyong Na ◽  
Dong Pil Kang ◽  
Hoy Yul Park ◽  
Myeong Sang Ahn ◽  
In Hye Myung
Keyword(s):  
Contact Angle ◽  
Colloidal Silica ◽  
Flat Surface ◽  
Coating Layer ◽  
Sol Gel ◽  
Chemical Properties ◽  
Coating Films ◽  
Initial Stage ◽  
Physical And Chemical ◽  
And Chemical Properties

Three kinds of colloidal silica (CS)/silane sol solutions were synthesized in variation with parameters such as different acidity and reaction time. Sol solutions were prepared from HSA CS/ methyltrimethoxysilane (MTMS), LS CS/MTMS and LS CS/MTMS/γ -Glycidoxypropyltri methoxysilane (ES) solutions. In order to understand their physical and chemical properties, sol-gel coating films were fabricated on glass. Coating films on glass, obtained from LS/MTMS sol, had high contact angle, also, much enhanced flat surface in the case of LS/MTMS sol was observed in comparison with HSA/ MTMS sol. From all sol-gel solutions, seasoning effect of for enhancing properties of sol-gel coating layer on glass was observed while such sol-gel solutions were left for 7days. In initial stage of sol-gel reaction, all most of sol solutions used in this work seem to be unstable, formation of coating films was a little hazy and rough. However, improved coating films as observed in 4days later. LS/MTMS/ES sol solutions were synthesized with ES, adding to LS/MTMS sol. Contact angle of LS/MTMS/ES sol-gel coating films decreased, since ES played a role in forming hydrophilic hydroxyl sol. The elastic portion of coating films prepared from LS/MTMS/ES sol increased with addition of ES, but thermal stability decreased a little.

Preparation of Pb-based complex perovskite coating films by sol-gel method

1992 ◽  
Author(s):  
Kang Jian ◽  
Toshinobu Yoko ◽  
Hiromitsu Kozuka ◽  
Sumio Sakka
Keyword(s):  
Sol Gel ◽  
Complex Perovskite ◽  
Coating Films ◽  
Gel Method ◽  
Sol Gel Method

Preparation of TiO2 coating films containing Pd fine particles by sol-gel method

1995 ◽  
Vol 4 (1) ◽  
pp. 37-47 ◽  
Author(s):  
Gaoling Zhao ◽  
Hiromitsu Kozuka ◽  
Sumio Sakka
Keyword(s):  
Fine Particles ◽  
Sol Gel ◽  
Tio2 Coating ◽  
Coating Films ◽  
Gel Method ◽  
Sol Gel Method

Sol-gel preparation of amorphous Li2B4O7 coating films

1990 ◽  
Vol 189 (1) ◽  
pp. L5-L10 ◽  
Author(s):  
Hiroya Yamashita ◽  
Toshinobu Yoko ◽  
Sumio Sakka
Keyword(s):  
Sol Gel ◽  
Coating Films ◽  
Gel Preparation

Nanoparticles-Based Phenol-Formaldehyde Hybrid Resins

2008 ◽  
Vol 8 (6) ◽  
pp. 3142-3145 ◽  
Author(s):  
Genoveva Hernández-Padrón ◽  
Margarita García-Garduño ◽  
Miguel A. Canseco ◽  
Víctor M. Castaño
Keyword(s):  
Silica Nanoparticles ◽  
Phenol Formaldehyde ◽  
Sol Gel ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Coating Films ◽  
Corrosion Properties ◽  
Carboxylic Groups ◽  
Novel Material ◽  
New Material

The synthesis, characterization and corrosion properties of a novel material, produced by the reaction of silica nanoparticles with a functionalized Phenol-Formaldehyde Resin (PFR), are presented. Carboxylic groups were attached in situ to the PFR skeleton to produce a functionalized resin (PFR-SA), which is then reacted with sol–gel-prepared silica nanoparticles, yielding a novel hybrid (organic/inorganic) material (PFR-SA-nanoSiO2). This hybrid material was characterized by FT-IR, FT-Raman, TGA, DSC, SEM and corrosion tests, whose results showed significant improvement of the thermal properties in comparison with the PFR coating. In addition, the new material was efficient and durable against corrosion of metals, with the anticorrosive performance of PFR-SA and PFR-SA/nanoSiO2 coating films being superior to those of the original PFR coating.

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