Sol-gel synthesis of silica gel disc as applied to supports of organic molecules with optical functions

1993 ◽  
Vol 28 (17) ◽  
pp. 4607-4614 ◽  
Author(s):  
S. Sakka ◽  
K. Aoki ◽  
H. Kozuka ◽  
J. Yamaguchi
Keyword(s):  
Silica Gel ◽  
Organic Molecules ◽  
Sol Gel ◽  
Optical Functions ◽  
Sol Gel Synthesis

ChemInform Abstract: Sol-Gel Synthesis of Carbon/Silica Gel Electrodes for Lithium Intercalation.

ChemInform ◽  
2010 ◽  
Vol 31 (8) ◽  
pp. no-no
Author(s):  
Gerko Oskam ◽  
Peter C. Searson ◽  
T. Richard Jow
Keyword(s):  
Silica Gel ◽  
Sol Gel ◽  
Lithium Intercalation ◽  
Sol Gel Synthesis

scholarly journals Sol-Gel Synthesis, Characterization, and Effect of CdS nanoparticles on activity of liver Enzymes

2020 ◽  
Vol 3 (1) ◽  
pp. 35-42
Author(s):  
Asmaa J. Al-lamei
Keyword(s):  
Particle Size ◽  
Organic Molecules ◽  
Liver Enzymes ◽  
Sol Gel ◽  
Nano Particles ◽  
Cds Nanoparticles ◽  
Sol Gel Synthesis

This paper describes the synthesis of CdS nanoparticles by sol-gel route using organic molecules as gelatin media. At70ᵒC the CdS nanoparticles are formed with particle size 75.28nm.The nanoparticles are characterized by XRD,SEM, AFM and FTIR. The effect of nanoparticles on activity of liver enzymes (GPT and GOT)is also studied by using different concentration of NPs. It is found that the activity of GPT and GOT enzymes increases with decreases in nano particles concentrations and decreases in inhibition percentage. The greater activation of nano was demonstrated at concentration (10-1 M).

From Nanocomposite to Blend Hybrid pHEMA/SiO2 Hydrogels: The Effect of Chemical Coupling on Thermal Stability, Swelling and Bioactivity

2009 ◽  
Vol 151 ◽  
pp. 118-122
Author(s):  
A. Costantini ◽  
Giuseppina Luciani ◽  
Brigida Silvestri ◽  
Fabiana Tescione ◽  
Francesco Branda
Keyword(s):  
Thermal Stability ◽  
Silica Gel ◽  
Sol Gel ◽  
Decomposition Temperature ◽  
Swelling Properties ◽  
Chemical Coupling ◽  
Methacrylate Monomers ◽  
Synthesis Procedure ◽  
Sol Gel Synthesis

Hybrids of poly(2-hydroxyethylmethacrylate) (pHEMA), a polymer widely employed for biomedical applications, and silica gel, exhibiting a well-known bioactivity, were produced by in- situ sol-gel synthesis using two different procedures. Only Tetraethylortosilicate (TEOS) was used as inorganic precursor in the former, whereas both TEOS and methacrylate monomers bearing an alkoxysilyl unit, prepared by Michael addition of 2-hydroxyethylmethacrylate (HEMA) to 3-Aminopropyltriethoxysilane (APTS), were employed in the latter. A final concentration of 30% w/w of silica gel to the mass of polymer was obtained in both procedures. The samples prepared through the former route will be referred as T03, those obtained the latter route will be named as AT03. AT03 hybrids are optically transparent, whereas T03 samples show phase separation between the polymer and the silica gel. Synthesis procedure strongly affects hybrids structure: the silica phase mean diameter changes from 500 nm (T03) to about 50 nm when the coupling hybrid monomer is employed (AT03). Both hybrids keep swelling properties and show improved thermal stability than the as-prepared polymer, indeed AT03 exhibits the highest decomposition temperature and T03 show the highest swelling ratio. Moreover, silica gel has hydroxyapatite formed on both hybrids surface, when soaked in SBF.

Inorganic-organic Hybrid Materials for Real 3-D Sub-νm Lithography

2003 ◽  
Vol 780 ◽  
Author(s):  
R. Houbertz ◽  
J. Schulz ◽  
L. Fröhlich ◽  
G. Domann ◽  
M. Popall ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Sol Gel ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Hybrid Polymer ◽  
Organic Hybrid ◽  
Two Photon ◽  
Applied Technology ◽  
Scale Structures ◽  
Sol Gel Synthesis

AbstractReal 3-D sub-νm lithography was performed with two-photon polymerization (2PP) using inorganic-organic hybrid polymer (ORMOCER®) resins. The hybrid polymers were synthesized by hydrolysis/polycondensation reactions (modified sol-gel synthesis) which allows one to tailor their material properties towards the respective applications, i.e., dielectrics, optics or passivation. Due to their photosensitive organic functionalities, ORMOCER®s can be patterned by conventional photo-lithography as well as by femtosecond laser pulses at 780 nm. This results in polymerized (solid) structures where the non-polymerized parts can be removed by conventional developers.ORMOCER® structures as small as 200 nm or even below were generated by 2PP of the resins using femtosecond laser pulses. It is demonstrated that ORMOCER®s have the potential to be used in components or devices built up by nm-scale structures such as, e.g., photonic crystals. Aspects of the materials in conjunction to the applied technology are discussed.

Sol-Gel Synthesis, Structure and Optical Properties of Nickel-Manganese Ferrites

2019 ◽  
Vol 11 (3) ◽  
pp. 03021-1-03021-5
Author(s):  
V. S. Bushkova ◽  
◽  
I. P. Yaremiy ◽  
B. K. Ostafiychuk ◽  
N. I. Riznychuk ◽  
...  
Keyword(s):  
Optical Properties ◽  
Sol Gel ◽  
Sol Gel Synthesis ◽  
Nickel Manganese

Sol-Gel Synthesis of Nano-Scale, End-Member Albite Feldspar (NaAlSi3O8)

2021 ◽  
Author(s):  
L.M. Anovitz ◽  
A. Affolter ◽  
M.C. Cheshire ◽  
A.J. Rondinone ◽  
Lawrence F. Allard
Keyword(s):  
Sol Gel ◽  
Nano Scale ◽  
Sol Gel Synthesis
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