Preparation and Properties of Novel Aerodynamic Pressure-sensitive Paint Via the Sol-gel Method

2002 ◽  
Vol 17 (6) ◽  
pp. 1312-1319 ◽  
Author(s):  
Feng-Zhi Jiang ◽  
Ren Xu ◽  
Duo-Yuan Wang ◽  
Xing-De Dong ◽  
Gui-Chun Li ◽  
...  
Keyword(s):  
Pressure Distribution ◽  
Gas Flow ◽  
Sol Gel ◽  
Silica Matrix ◽  
Pressure Sensitive Paint ◽  
Gel Method ◽  
Sol Gel Method ◽  
Aerodynamic Pressure ◽  
Pressure Sensitive ◽  
Oxygen Sensitive

A novel aerodynamic pressure-sensitive paint (PSP) was prepared by using the sol-gel process for measuring the pressure distribution variation on an aerodynamic surface with an oxygen-containing gas flow. In this PSP, RuII complexes as oxygen-sensitive probe molecules excited with visible light of 436 nm were dispersed into the organic modified silica matrix film prepared by the sol-gel method. A linear relationship between the emission intensity and the oxygen partial pressure was achieved in the airflow pressure range of 10.1–405 kPa, and the slope that represents the sensitivity of PSP for oxygen quenching reaches 0.75. A pressure distribution map was demonstrated showing a spatial resolution of 0.25 mm.

Design of a DNA-Based Biomaterial by Sol-Gel Method: Application for the Recognition of Albendazole Sulfoxide

MRS Advances ◽  
2019 ◽  
Vol 4 (64) ◽  
pp. 3537-3543
Author(s):  
Elani J. Cabrera-Vega ◽  
Georgina Alarcón-Ángeles ◽  
Martín Gómez Hernández ◽  
Gonzalo Campillo-Alvarado ◽  
Marcela Hurtado Y De la Peña
Keyword(s):  
Sol Gel ◽  
Silica Matrix ◽  
Primary Metabolite ◽  
Gel Method ◽  
Sol Gel Method ◽  
Albendazole Sulfoxide ◽  
Pharmaceutical Ingredients ◽  
Physical Entrapment ◽  
Specific Retention ◽  
Frontal Chromatography

ABSTRACTWe describe the use of immobilized deoxyribonucleic acid (DNA) in a silica matrix as a biorecognition agent for the detection of albendazole sulfoxide (ASU), the primary metabolite of albendazole and a suspected teratogenic and embryotoxic agent. The biomaterial (DNA-containing gel) was synthesized by physical entrapment of salmon sperm in an inorganic silicate matrix by the sol-gel method. Functionality of the DNA-containing gel was evaluated by comparative offline frontal chromatography followed by HPLC analysis of ASU and caffeine (CAF, control) using DNA-containing gel and DNA-free gel. The DNA-containing gel showed relatively high specific retention for ASU, while CAF showed no retention using frontal analysis. We anticipate that the DNA-containing gel can be implemented to identify the interactions of DNA with other active pharmaceutical ingredients (APIs) and their metabolites in a readily available, sensitive and selective frontal chromatography experiment.

Iron and Iron-oxide on Silica Nanocomposites Prepared by the Sol-gel Method

2002 ◽  
Vol 17 (3) ◽  
pp. 590-596 ◽  
Author(s):  
G. Ennas ◽  
M. F. Casula ◽  
G. Piccaluga ◽  
S. Solinas ◽  
M. P. Morales ◽  
...  
Keyword(s):  
Sol Gel ◽  
Silica Matrix ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Nanocomposites ◽  
Transmission Electron ◽  
Nanometric Particles

γ–Fe2O3/SiO2 and Fe/SiO2 nanocomposites, with a Fe/Si molar ratio of 0.25, were prepared by the sol-gel method starting from ethanolic solutions of tetraethoxysilane and iron (III) nitrate. After gelation the xerogels were oxidated or reduced. Samples were investigated by transmission electron microscopy, x-ray diffraction, differential scanning calorimetry, and thermogravimetry. Magnetic properties of the samples were investigated at room temperature (RT) and at 77 K. Nanometric particles supported in the silica matrix were obtained in all cases. Bigger particles (10 nm) were obtained in the case of Fe/SiO2 nanocomposites with respect to the γ–Fe2O3/SiO2 samples (5–8 nm). A slight effect of sol dilution on particle size was observed only in the case of γ–Fe2O3/SiO2 nanocomposites. A superparamagnetic behavior was shown at RT only by γ–Fe2O3/SiO2 nanocomposites. Iron-based composites exhibited coercivity values higher than 700 Oe at RT.

Luminescence and thermal stability of sodium tris(pyridine dicarboxylate) terbate(III) complex incorporated in silica matrix by sol-gel method

2001 ◽  
Vol 36 (7-8) ◽  
pp. 1335-1346 ◽  
Author(s):  
Bao-li An ◽  
Jian-qing Ye ◽  
Meng-lian Gong ◽  
Xian-hong Yin ◽  
Yan-sheng Yang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Sol Gel ◽  
Silica Matrix ◽  
Gel Method ◽  
Sol Gel Method ◽  
Thermal Stability Of

Eu3+-Doped Y2O3-SiO2 Nanocomposite Obtained by a Sol-Gel Method

2001 ◽  
Vol 676 ◽  
Author(s):  
Carla Cannas ◽  
Mariano Casu ◽  
Roberta Licheri ◽  
Anna Musinu ◽  
Giorgio Piccaluga ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
Sol Gel ◽  
Silica Matrix ◽  
Luminescence Spectroscopy ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Excited Luminescence ◽  
The Eu

ABSTRACTA Y2O3-SiO2 nanocomposite doped with Eu3+ was obtained by a sol-gel method and characterized by X-ray diffraction, IR, 29Si NMR and laser-excited luminescence spectroscopy. It was found that small (2-3 nm) yttria nanoparticles are homogeneously dispersed in, and interacting with, the amorphous silica matrix. Luminescence spectroscopy indicates that the Eu3+ ion is preferentially located inside or at the surface of highly disordered Y2O3 nanoparticles. These luminescent nanocomposites form a class of materials which could find applications in the field of phosphors.

A Sol−Gel Method Using Tetraethoxysilane and Acetic Anhydride:  Immobilization of Cubic μ-Oxo Si−Ti Complex in a Silica Matrix

2002 ◽  
Vol 14 (12) ◽  
pp. 4975-4981 ◽  
Author(s):  
Masahiro Fujiwara ◽  
Helge Wessel ◽  
Hyung S. Park ◽  
Herbert W. Roesky
Keyword(s):  
Acetic Anhydride ◽  
Sol Gel ◽  
Silica Matrix ◽  
Gel Method ◽  
Sol Gel Method

ChemInform Abstract: Luminescence Property of the Terbium Bipyridyl Complex Incorporated in Silica Matrix by a Sol-Gel Method.

ChemInform ◽  
2010 ◽  
Vol 27 (3) ◽  
pp. no-no
Author(s):  
T. JIN ◽  
S. TSUTSUMI ◽  
Y. DEGUCHI ◽  
K. MACHIDA ◽  
G. ADACHI
Keyword(s):  
Luminescence Property ◽  
Sol Gel ◽  
Silica Matrix ◽  
Gel Method ◽  
Sol Gel Method ◽  
Bipyridyl Complex
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