Auto-organization of Nanostructured Organic−Inorganic Hybrid Xerogels Prepared by Sol−Gel Processing: The Case of a “Twisted” Allenic Precursor

2004 ◽  
Vol 16 (20) ◽  
pp. 3794-3799 ◽  
Author(s):  
Geneviève Cerveau ◽  
Robert J. P. Corriu ◽  
Eric Framery ◽  
Frédéric Lerouge
Keyword(s):  
Sol Gel ◽  
Inorganic Hybrid ◽  
Hybrid Xerogels ◽  
Gel Processing

Auto-organization of nanostructured organic–inorganic hybrid xerogels prepared from planar precursors by sol–gel processing

2004 ◽  
Vol 14 (20) ◽  
pp. 3019-3025 ◽  
Author(s):  
Geneviève Cerveau ◽  
Robert J. P. Corriu ◽  
Eric Framery ◽  
Frédéric Lerouge
Keyword(s):  
Sol Gel ◽  
Inorganic Hybrid ◽  
Hybrid Xerogels ◽  
Gel Processing

Non-Hydrolyzed Resins for Organic-Inorganic Hybrid Coatings

2017 ◽  
pp. 771-801 ◽  
Author(s):  
Stefan Holberg
Keyword(s):  
Protective Coatings ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Industrial Scale ◽  
Atmospheric Moisture ◽  
Inorganic Hybrid ◽  
Chemical Structures ◽  
Hydrolysis And Condensation ◽  
Gel Processing ◽  
Area Of Application

This chapter focuses on resins based on non-hydrolyzed, monomeric and polymeric alkoxysilanes. As alternative to classical sol-gel processing, the resins are applied to a surface without a preceding hydrolysis step. Only after application, hydrolysis and condensation of the alkoxysilyl groups occur by means of atmospheric moisture to result cross-linked organic-inorganic hybrid coatings. While the use of non-hydrolyzed silanes is well established, for example by applying polyethyl silicate as binder for zinc-rich anti-corrosive primers, this chapter describes the chemical structures of various novel organic-inorganic hybrid precursors that have significantly extended the area of application to adhesives and scratch-resistant, repellent, or anti-fouling coatings. At present, individual resins are produced and applied at industrial scale in the fields of protective coatings and automotive topcoats.

Organic–Inorganic Hybrid Sol–Gel Materials For Optical Waveguide Application

2012 ◽  
Author(s):  
Ahmad Sharmi Abdullah ◽  
Amirjan Nawabjan ◽  
Norazan Mohd Kassim ◽  
Mohd Haniff Ibrahim ◽  
Mohamad Zahid Abdul Malek
Keyword(s):  
Optical Waveguide ◽  
Spin Coating ◽  
Optical Waveguides ◽  
Quartz Substrate ◽  
Sol Gel ◽  
Single Mode ◽  
Processing Technique ◽  
Inorganic Hybrid ◽  
Gel Processing ◽  
Butt Coupling

Pandu gelombang optik jalur berasaskan bahan–bahan sol–gel organik–bukan organic (hybrid) direka, disimulasi dan dibentuk. Bahan–bahan sol–gel hybrid tersebut disediakan daripada vinyltriethoxysilane (VTES), tetraethoxysilane (TEOS) dan tetrabutoxytitanate (TTBu) malalui kaedah pemprosesan sol–gel. Pandu gelombang optik tersebut telah dibentuk di atas lapisan quartz menggunakan kaedah penyalutan berputar, lithografi langsung, dan goresan kimia basah. Beberapa lapisan sol telah dibentuk demi mendapatkan struktur pandu gelombang dengan ketebalan yang sesuai untuk laluan mod cahaya sebagaimana diperolehi daripada simulasi. Kebolehan pandu gelombang untuk memandu cahaya pada panjang gelombang 1550 nm telah dicirikan mengunakan kaedah direct end–face fiber butt–coupling. Struktur fizikal pandu gelombang tersebut telah diperhatikan melalui mikroskop berkuasa tinggi. Keputusan yang diperolehi menunjukkan bahawa bahan yang dicadangkan boleh digunakan dalam aplikasi pemanduan gelombang optik pada panjang gelombang 1550 nm. Simulasi menunjukkan bahawa pandu gelombang jalur satu mod dapat direalisasikan jika ketebalan dan kelebaran pandu gelombang tersebut berada pada suatu julat nilai tertentu. Julat nilai tersebut dapat diperolehi melalui pengawalan parameter–parameter penyalutan berputar dan pembentukan mikro. Kualiti keratan rentas yang baik juga diperhatikan telah diperolehi melalui kaedah pembelahan semulajadi. Kata kunci: Pemprosesan sol–gel; bahan organik–bukan organic; pandu gelombang jalur Ridge optical waveguides based on organic–inorganic (hybrid) sol–gel materials were designed, simulated and fabricated. The hybrid sol–gel materials were synthesized from vinyltriethoxysilane (VTES), tetraethoxysilane (TEOS) and tetrabutoxytitanate (TTBu) precursors by means of sol–gel processing technique. The optical waveguides were fabricated on quartz substrate using spin coating, direct photolithography, and wet chemical etching techniques. Multiple layers of sol were deposited so as to obtain waveguide structure with suitable thickness for mode propagation such as acquired from the simulation. Waveguiding ability of the ridge optical waveguides at 1550 nm wavelength was characterized using direct end–face fiber butt–coupling method. Physical structure of the waveguides was observed through high power microscope. Observation showed that the proposed material possesses the ability for waveguiding application at the wavelength of 1550 nm. Simulation showed that a single mode ridge optical waveguide could be realized provided that the structure thickness and width are within certain range. The range is attainable through proper control of spin coating and micropatterning parameters. Acceptable end–face quality resulted from natural cleaving process was also discovered. Key words: Sol–gel processing; organic–inorganic material; ridge optical waveguide

Organophosphorus-Based Organic / Inorganic Hybrids

2000 ◽  
Vol 628 ◽  
Author(s):  
André Vioux ◽  
P. Hubert Mutin ◽  
Jean Le Bideau ◽  
Dominique Leclercq
Keyword(s):  
Sol Gel ◽  
Three Dimensional ◽  
Coupling Agents ◽  
Inorganic Hybrid ◽  
Metal Oxide Surfaces ◽  
Metal Phosphonates ◽  
Concise Review ◽  
Synthetic Routes ◽  
Gel Processing ◽  
Inorganic Network

ABSTRACTThis paper is a concise review of some recent works which highlights the interest of phosphonate groups RP (O)32- in the field of organic/inorganic hybrid materials, as a general alternative to silicon coupling agents in anchoring of an organic group to an inorganic support or within an inorganic network. Examples, focused on metals of groups 4 and 13, illustrate various synthetic routes, from the hydrothermal synthesis of two- or three-dimensional metal phosphonates, to the introduction of organic moieties into oxide matrices by sol-gel processing, without excluding the grafting of metal oxide surfaces.

Non-Hydrolyzed Resins for Organic-Inorganic Hybrid Coatings

2016 ◽  
pp. 105-135
Author(s):  
Stefan Holberg
Keyword(s):  
Protective Coatings ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Industrial Scale ◽  
Atmospheric Moisture ◽  
Inorganic Hybrid ◽  
Chemical Structures ◽  
Hydrolysis And Condensation ◽  
Gel Processing ◽  
Area Of Application

This chapter focuses on resins based on non-hydrolyzed, monomeric and polymeric alkoxysilanes. As alternative to classical sol-gel processing, the resins are applied to a surface without a preceding hydrolysis step. Only after application, hydrolysis and condensation of the alkoxysilyl groups occur by means of atmospheric moisture to result cross-linked organic-inorganic hybrid coatings. While the use of non-hydrolyzed silanes is well established, for example by applying polyethyl silicate as binder for zinc-rich anti-corrosive primers, this chapter describes the chemical structures of various novel organic-inorganic hybrid precursors that have significantly extended the area of application to adhesives and scratch-resistant, repellent, or anti-fouling coatings. At present, individual resins are produced and applied at industrial scale in the fields of protective coatings and automotive topcoats.

Sign in / Sign up

Export Citation Format

Share Document