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Frederik Detobel et al.
Journal of chromatography. A, 1216(44), 7360-7367 (2009-03-27)
We report on the synthesis of siloxane-based monoliths in the presence of a two-dimensional, perfectly ordered array of micro-pillars. Both methyltrimethoxysilane- and tetramethoxysilane-based monoliths were considered. The obtained structures were analyzed using scanning-electron microscopy and can be explained from the
H El Rassy et al.
Chembiochem : a European journal of chemical biology, 4(2-3), 203-210 (2003-03-05)
Highly porous silica aerogels with differing balances of hydrophobic and hydrophilic functionalities were studied as a new immobilization medium for enzymes. Two types of lipases from Candida rugosa and Burkholderia cepacia were homogeneously dispersed in wet gel precursors before gelation.
Cleide M F Soares et al.
Applied biochemistry and biotechnology, 121-124, 845-859 (2005-06-03)
Candida rugosa lipase was entrapped in silica sol-gel particles prepared by hydrolysis of methyltrimethoxysilane and assayed by p-nitrophenyl palmitate hydrolysis, as a function of pH and temperature, giving pH optima of 7.8 (free enzyme) and 5.0-8.0 (immobilized enzyme). The optimum
Casseday P Richers et al.
Inorganic chemistry, 55(12), 5744-5746 (2016-06-04)
The commercially practiced conversion of trimethoxymethylsilane (MTM) to [OSi(OMe)Me)]n polymers and resins is assumed to proceed via the silanol (MeO)2MeSiOH. Access to this crucial silanol is gained via the synthesis of (MeO)2MeSiONa, the first methoxysilanoate to be crystallographically characterized. Mild
Stefan Laschober et al.
Journal of chromatography. A, 1191(1-2), 282-291 (2008-04-11)
A set of monolithic capillary columns for liquid chromatography, synthesized according to a recently developed protocol which uses methyltrimethoxysilane (MTMS) as a sole precursor, is characterised by various chromatographic tests to assess its physico-chemical properties. The new stationary phase material
Wan Aini Wan Ibrahim et al.
Journal of chromatography. A, 1229, 55-62 (2012-02-14)
A novel sol-gel hybrid methyltrimethoxysilane-tetraethoxysilane (MTMOS-TEOS) was produced and applied as sorbent for solid phase extraction (SPE). Five selected organophosphorus pesticides (OPPs) were employed as model compounds to evaluate the extraction performance of the synthesized sol-gel organic-inorganic hybrid MTMOS-TEOS. Analysis
Jinghua Yu et al.
Analytica chimica acta, 651(2), 209-214 (2009-09-29)
Multimode reader has been generally applied in immunoassay, and in the proposed paper, the 96 well micro-plate was modified with molecularly imprinted melamine sol-gel film, based on which the highly selective and high throughput detection of melamine was achieved. Melamine
Investigation of Silane Modified Ceramic Surface of Porous Mullite Ceramics.
Markovska I, et al.
World Academy of Science, Engineering and Technology, 79(7), 272-276 (2013)
Daniel A Riccio et al.
Biomaterials, 30(27), 4494-4502 (2009-06-09)
The synthesis, material characterization, and in vitro biocompatibility of S-nitrosothiol (RSNO)-modified xerogels are described. Thiol-functionalized xerogel films were formed by hydrolysis and co-condensation of 3-mercaptopropyltrimethoxysilane (MPTMS) and methyltrimethoxysilane (MTMOS) sol-gel precursors at varying concentrations. Subsequent thiol nitrosation via acidified nitrite
A Venkateswara Rao et al.
Journal of colloid and interface science, 352(1), 30-35 (2010-09-09)
The wetting of solid surfaces by water droplets is ubiquitous in our daily lives as well as in industrial processes. In the present research work, water repellent porous silica films are prepared on glass substrate at room temperature by sol-gel
Organo-modified silica aerogels and implications for material hydrophobicity and mechanical properties.
Martin L, et al.
Journal of Materials Chemistry, 18(2), 207-213 (2008)
Yoshitaka Suzumura et al.
Journal of chromatography. A, 1119(1-2), 88-94 (2006-03-28)
When bicontinuous gels are prepared via sol-gel method in a 2-dimensionally (2D) confined space, the gel skeletons in the vicinity of interface of a mold are elongated perpendicular to the interface. This phenomenon was attributed to the dynamic wetting of
The formation of polyethyleneimine?trimethoxymethylsilane organic?inorganic hybrid particles.
Neville F, et al.
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 431, 42-50 (2013)
Utilization of alkoxysilyl groups for the creation of structurally controlled siloxane-based nanomaterials
Kuroda K, et al.
Chemistry of Materials, 26(1), 211-220 (2014)
Braden C Giordano et al.
Electrophoresis, 27(21), 4295-4302 (2006-10-06)
Microchip-based CEC of nitroaromatic and nitramine explosives with UV absorbance detection is described. The stationary phase was deposited in the microchip using the sol-gel process. Unique to this work, is the exclusive use of alkylated-trimethoxysilane precursors in the gel solution.
Yan Gao et al.
Langmuir : the ACS journal of surfaces and colloids, 26(2), 1239-1246 (2009-09-03)
The immobilization of biological species such as proteins and enzymes in sol-gel hosts is currently an area of intense research activity. However, the majority of these studies have been directed toward investigating the biological activity or physicochemical properties of the
Katsuya Kato et al.
Bioscience, biotechnology, and biochemistry, 66(1), 221-223 (2002-02-28)
Three kinds of lipases (from Candida antarctica, Pseudomonas cepacia, and Pseudomonas fluorescens) were encapsulated in inorganic matrices by the sol-gel method in order to synthesize chiral compounds by kinetic resolution. Sol-gel lipases prepared with vinyltriethoxysilane had higher hydrolysis activity for
Li-Yan Zhang et al.
Guang pu xue yu guang pu fen xi = Guang pu, 26(9), 1631-1635 (2006-11-23)
The characters of optical sensing films for ammonia were investigated based on a fluorescent indicator aminofluorescein (AF) immobilization. An organically modified silicates (ORMOSILSs) obtained by copolymerizing various proportions of methyltrimethoxysilane (Me-TriMOS) and tetramethoxysilane (TMOS) was applied. Compared with the fluorescent
M Morpurgo et al.
Farmaco (Societa chimica italiana : 1989), 60(8), 675-683 (2005-06-28)
The influence of processing parameters and synthetic strategies in the properties of sol-gel derived silica matrices intended for the release of bioactive compounds was investigated. The time-evolution of the matrix properties during its aging at room temperature in the dry
Jafariah Jaafar et al.
Analytical and bioanalytical chemistry, 391(7), 2551-2556 (2008-05-07)
An anion exchange monolithic silica capillary column was prepared by surface modification of a hybrid monolithic silica capillary column prepared from a mixture of tetramethoxysilane (TMOS) and methyltrimethoxysilane (MTMS). The surface modification was carried out by on-column copolymerization of N-[3-(dimethylamino)propyl]acrylamide
Sameer Kulkarni et al.
Journal of chromatography. A, 1174(1-2), 50-62 (2007-11-21)
Sol-gel coating with covalently bonded low-molecular-weight (MW<300 Da) poly(ethylene glycol) (PEG) chains was developed for capillary microextraction (CME). The sol-gel chemistry proved effective in the immobilization of low-molecular-weight PEGs thanks to the formation of chemical bonds between the organic-inorganic hybrid
Jose Antonio Toledo-Fernández et al.
Journal of materials science. Materials in medicine, 19(5), 2207-2213 (2007-12-01)
Organic-inorganic hybrid materials were synthesized by controlled hydrolysis of tetraethoxysilane (TEOS), methyltrimethoxysilane (MTES), synthetic wollastonite powders and polydimethylsiloxane (PDMS) in an ethanol solution. Aerogels were prepared from acid hydrolysis of TEOS and MTES with different volume ratio in ethanol, followed
Xin Lu et al.
Journal of hazardous materials, 196, 234-241 (2011-09-29)
Poly(aminopropyl/methyl)silsesquioxane (PAMSQ) particles have been synthesized by a one-step hydrolytic co-condensation process using 3-aminopropyltriethoxysilane (APTES) and methyltrimethoxysilane (MTMS) as precursors in the presence of base catalyst in aqueous medium. The amino functionalities of the particles could be controlled by adjusting
Lei Qin et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 17(5), 1696-1704 (2011-01-27)
The main objective of this study was to develop a new methodology for the preparation of a protein (antigen) that is a molecularly imprinted polymer (MIP, an artificial antibody) modified onto the surface of a silica skeleton in which the
Takeshi Hara et al.
Journal of chromatography. A, 1217(1), 89-98 (2009-12-01)
The effect of a feed ratio of methyltrimethoxysilane (MTMS) to tetramethoxysilane (TMOS) was studied to improve the performance of a hybrid monolithic silica capillary column with 100-mum i.d. in HPLC in a range MTMS/TMOS (v/v)=10/90-25/75. The domain size was also
Moo-Yeal Lee et al.
Methods in molecular biology (Clifton, N.J.), 632, 221-237 (2010-03-11)
Due to poor drug candidate safety profiles that are often identified late in the drug development process, the clinical progression of new chemical entities to pharmaceuticals remains hindered, thus resulting in the high cost of drug discovery. To accelerate the
Stephanie M Marxer et al.
Analytical chemistry, 77(3), 848-853 (2005-02-01)
A potentiometric sol-gel derived (xerogel) pH sensor based on covalently attached amine groups is described. The sensor consists of a Ag/AgCl electrode coated with a hybrid aminosilane/alkylsilane xerogel film. Various combinations of aminosilanes and alkylsilanes are evaluated for their potentiometric
Bao Chau N Nguyen et al.
ACS applied materials & interfaces, 2(5), 1430-1443 (2010-04-30)
The elastic properties and/or flexibility of polymer reinforced silica aerogels having methyltrimethoxysilane (MTMS) and bis(trimethoxysilylpropyl)amine (BTMSPA) making up the silica structure are examined. The dipropylamine spacer from BTMSPA is used both to provide a flexible linking group in the silica
Tong Zhang et al.
Electrophoresis, 29(4), 944-951 (2008-01-24)
This simultaneous separation of basic, acidic and neutral analytes by pressure-assisted CEC (pCEC) using a hybrid (tetramethoxysilane and methyltrimethoxysilane) silica-based monolith, chemically modified with octadecyldimethylchlorosilane followed by endcapping with hexamethyldisilazane is described. The endcapping resulted in near Gaussian peaks for
Mary E Robbins et al.
Journal of the American Chemical Society, 125(20), 6068-6069 (2003-06-06)
The release of nitric oxide (NO) from polymers has proven to be highly effective at inhibiting platelet adhesion and thus enhancing the blood compatibility of medical implants. Micropatterning techniques were used to design surfaces that release NO while preserving the
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