An organically modified silica aerogel for online in-tube solid-phase microextraction

2017 ◽  
Vol 1517 ◽  
pp. 203-208 ◽  
Author(s):  
Yanan Bu ◽  
Juanjuan Feng ◽  
Yu Tian ◽  
Xiuqin Wang ◽  
Min Sun ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Modified Silica ◽  
Organically Modified ◽  
Organically Modified Silica

scholarly journals Favourable influence of hydrophobic surfaces on protein structure in porous organically-modified silica glasses

Biomaterials ◽  
2008 ◽  
Vol 29 (18) ◽  
pp. 2710-2718 ◽  
Author(s):  
Bouzid Menaa ◽  
Mar Herrero ◽  
Vicente Rives ◽  
Mayya Lavrenko ◽  
Daryl K. Eggers
Keyword(s):  
Protein Structure ◽  
Modified Silica ◽  
Hydrophobic Surfaces ◽  
Silica Glasses ◽  
Organically Modified ◽  
Organically Modified Silica

Absorption of short-chain to long-chain perfluoroalkyl substances using swellable organically modified silica

2019 ◽  
Vol 5 (11) ◽  
pp. 1854-1866 ◽  
Author(s):  
Eva K. Stebel ◽  
Kyndal A. Pike ◽  
Huan Nguyen ◽  
Heather A. Hartmann ◽  
Mattaeus J. Klonowski ◽  
...  
Keyword(s):  
Short Chain ◽  
Perfluoroalkyl Substances ◽  
Modified Silica ◽  
Wide Range ◽  
Organically Modified ◽  
Organically Modified Silica ◽  
Long Chain

Adsorbents comprising swellable organically modified silica were characterized to optimize the adsorption of a wide range of perfluoroalkyl substances from water.

A silica aerogel as an extractive coating for in-tube solid-phase microextraction to determine polycyclic aromatic hydrocarbons in water samples

2019 ◽  
Vol 11 (45) ◽  
pp. 5784-5792 ◽  
Author(s):  
Xiangping Ji ◽  
Juanjuan Feng ◽  
Chunying Li ◽  
Sen Han ◽  
Jiaqing Feng ◽  
...  
Keyword(s):  
Silica Aerogel ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Ambient Pressure ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Ambient Pressure Drying ◽  
Acid Base ◽  
Polycyclic Aromatic

A silica aerogel with high surface area was prepared by an acid–base two-step catalytic sol–gel method under ambient pressure drying.

scholarly journals Template-Free Synthesis of Organically Modified Silica Mesoporous Thin Films for TNT Sensing

2010 ◽  
Vol 2 (10) ◽  
pp. 2892-2897 ◽  
Author(s):  
Adem Yildirim ◽  
Hulya Budunoglu ◽  
Hakan Deniz ◽  
Mustafa O. Guler ◽  
Mehmet Bayindir
Keyword(s):  
Thin Films ◽  
Modified Silica ◽  
Mesoporous Thin Films ◽  
Organically Modified ◽  
Organically Modified Silica ◽  
Template Free

A photorefractive organically modified silica glass with high optical gain

Nature ◽  
2000 ◽  
Vol 408 (6808) ◽  
pp. 64-67 ◽  
Author(s):  
Pavel Cheben ◽  
Francisco del Monte ◽  
Dennis J. Worsfold ◽  
Dave J. Carlsson ◽  
Chander P. Grover ◽  
...  
Keyword(s):  
Silica Glass ◽  
Optical Gain ◽  
Modified Silica ◽  
Organically Modified ◽  
Organically Modified Silica

Organically Modified Silica-Based Xerogels Derived from 3-Aminopropyltrimethoxysilane and 3-Isocyanatepropyltriethoxysilane through Carboxylic Acid Solvolysis

2006 ◽  
Vol 514-516 ◽  
pp. 108-112 ◽  
Author(s):  
Lianshe Fu ◽  
Rute A. Sá Ferreira ◽  
Sonia S. Nobre ◽  
Luís D. Carlos ◽  
João Rocha
Keyword(s):  
Acetic Acid ◽  
Carboxylic Acid ◽  
Valeric Acid ◽  
Silica Xerogels ◽  
X Ray Diffraction ◽  
Modified Silica ◽  
13C Nuclear Magnetic Resonance ◽  
Organically Modified ◽  
Cross Links ◽  
Organically Modified Silica

Organically-modified silica xerogels from 3-aminopropyltrimethoxysilane (APTES) and 3-isocyanatepropyltriethoxysilane (ICPTES) have been synthesized through carboxylic acid (formic acid, acetic acid and valeric acid) solvolysis. The resulting hybrid materials have been characterized by powder X-ray diffraction, mid-infrared spectroscopy, 29Si and 13C nuclear magnetic resonance, and photoluminescence spectroscopy. The results show that urea cross-links have been formed in these hybrids. The luminescence features depend on the selected carboxylic acids. For example, comparatively to the hybrids derived from formic and acetic acid solvolysis, valeric acid shows a red-shift of the emission features.

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