Showing 1-30 of 140 results for "333859"
Rajendra K Singh et al.
Journal of biomedical materials research. Part A, 100(7), 1734-1742 (2012-03-27)
Magnetic nanoparticles (MNPs) are considered highly useful in therapeutic and diagnostic applications. However, MNPs require surface modification to promote dispersibility in aqueous solutions and thus biocompatibility. In this article, the authors modified MNPs with inorganic silica layer to create silica-coated...
Werner E G Müller et al.
Journal of tissue engineering and regenerative medicine, 9(11), E39-E50 (2013-04-16)
Polymeric silica is formed from ortho-silicate during a sol-gel formation process, while biosilica is the product of an enzymatically driven bio-polycondensation reaction. Both polymers have recently been described as a template that induces an increased expression of the genes encoding...
Víctor Sebastian et al.
Nanoscale, 6(21), 13228-13235 (2014-09-27)
Compared to freestanding nanoparticles, supported nanostructures typically show better mechanical stability as well as ease of handling. Unique shapes such as core-shells, raspberries and crescents have been developed on supported materials to gain improved chemical and optical properties along with...
Qi An et al.
Soft matter, 11(34), 6859-6865 (2015-08-04)
A "nano-net" superstratum strategy is developed to stabilize layer-by-layer (LbL) films that incorporate nanoparticles. The superstratum immobilizes silica, gold, or magnetic nanoparticles and at the same time is permeable to small molecules. Unlike most strategies to stabilize LbL multilayers reported...
Bo Zhang et al.
Colloids and surfaces. B, Biointerfaces, 131, 129-135 (2015-05-20)
Biotemplating is an effective strategy to obtain morphology-controllable materials with structural specificity, complexity, and corresponding unique functions. Herein we take advantage of the unique heavy-metal-ion biosorption behavior of cyanobacteria cells to fabricate Fe3O4/cell composites. Meanwhile, cyanobacteria cells served as a...
Jiajia Yang et al.
Analytica chimica acta, 853, 311-319 (2014-12-04)
Bisphenol A (BPA) imprinted sponge mesoporous silica was synthesized using a combination of semi-covalent molecular imprinting and simple self-assembly process. The molecularly imprinted sponge mesoporous silica (MISMS) material obtained was characterized by FT-IR, scanning electron microscopy, transmission electron microscopy, and...
Suling Zhao et al.
Journal of colloid and interface science, 388(1), 40-46 (2012-09-12)
Monodispersed silica particles with bimodal size distribution were successfully prepared through adding an ethanol (EtOH) solution containing tetraethylorthosilicate (TEOS) dropwise into an ammonia EtOH solution at a constant low rate. The effects of the reaction parameters such as ammonia/ethanol ratio...
Sathiamurthi Perumal et al.
Journal of the mechanical behavior of biomedical materials, 52, 131-138 (2015-04-30)
The success of a tissue engineering scaffold depends on a fine balance being achieved between the physicochemical and biological properties. This study attempts to understand the influence of silica concentration on the functional properties of collagen-silica (CS) composite scaffolds for...
Wonjin Jo et al.
Nanotechnology, 23(5), 055601-055601 (2012-01-13)
Bacterial flagella are particularly attractive bio-templates for nanotubes due to their tubular structures and small inner and outer diameters. In this work, flagella isolated from Salmonella typhimurium were used as templates for silica-mineralized nanotubes. The process involved pretreatment of flagella...
Zhihai Cao et al.
Langmuir : the ACS journal of surfaces and colloids, 28(17), 7023-7032 (2012-04-12)
Mesoporous silica capsules with submicrometer sizes were successfully prepared via the interfacial hydrolysis and condensation reactions of tetraethoxysilane (TEOS) in inverse miniemulsion by using hydrophilic liquid droplets as template. The inverse miniemulsions containing pH-controlled hydrophilic droplets were first prepared via...
Bin Gao et al.
International journal of molecular medicine, 36(5), 1282-1290 (2015-12-10)
The aim of the present study was to examine the apoptosis of the hepatocellular carcinoma cell line, HepG2, induced by treatment with folic acid-conjugated silica-coated gold nanorods (GNRs@SiO2-FA) in combination with radiotherapy, and to determine the involvement of apoptosis-related proteins....
Fabrication of tunable silica-mineralized nanotubes using flagella as bio-templates
Jo W, et al.
Nanotechnology, 23(5) (2012)
Zahra Sharifalhoseini et al.
Journal of colloid and interface science, 455, 110-116 (2015-06-10)
The pure phase of the ZnO nanoparticles (NPs) as anticorrosive pigments was synthesized by the sonication method. The surfaces of the sono-synthesized nanoparticles were covered with the protective silica layer. The durability of the coated and uncoated ZnO NPs in...
Hongliang He et al.
Analytical and bioanalytical chemistry, 407(2), 509-519 (2014-11-15)
Highly selective molecularly imprinted mesoporous silica polymer (SBA-15@MIP) for baicalein (BAI) extraction was synthesized using a surface molecular imprinting technique on the SBA-15 supporter. Computational simulation was used to predict the optimal functional monomer for the rational design of SBA-15@MIP....
Sarika Goel et al.
Journal of the American Chemical Society, 136(43), 15280-15290 (2014-10-15)
The encapsulation of metal clusters (Pt, Ru, Rh) within MFI was achieved by exchanging cationic metal precursors into a parent zeolite (BEA, FAU), reducing them with H2 to form metal clusters, and transforming these zeolites into daughter structures of higher...
Subhraseema Das et al.
International journal of biological macromolecules, 79, 856-863 (2015-06-10)
pH-Responsive hydrogel systems based on guar gum (GG), poly(acrylic acid) (PAA) and β-cyclodextrin (CD) using a non-toxic crosslinker, tetraethyl orthosilicate for intestinal delivery of dexamethasone (DX) has been reported. Hydrogels of different compositions were synthesized and evaluated for the controlled...
Lu Yangfang et al.
Electrophoresis, 36(17), 2120-2127 (2015-05-21)
Submicron, non-porous, chiral silica stationary phase has been prepared by the immobilization of functionalized β-CD derivatives to isocyanate-modified silica via chemical reaction and applied to the pressurized capillary electrochromatography (pCEC) enantio-separation of various chiral compounds. The submicron, non-porous, cyclodextrin-based chiral...
Mahmoud M Eglal et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 50(9), 901-912 (2015-06-11)
Zero-valent iron nanoparticle (Nanofer ZVI) is a new reagent due to its unique structure and properties. Images of scanning electron microscopy/electron dispersive spectroscopy (SEM/EDS), transmission electron microscopy and X-ray diffraction revealed that Nanofer ZVI is stable, reactive and has a...
Ciceron Ayala-Orozco et al.
Journal of controlled release : official journal of the Controlled Release Society, 191, 90-97 (2014-07-23)
There is an unmet need for efficient near-infrared photothermal transducers for the treatment of highly aggressive cancers and large tumors where the penetration of light can be substantially reduced, and the intra-tumoral nanoparticle transport is restricted due to the presence...
Bo Sun et al.
Journal of colloid and interface science, 378(1), 93-99 (2012-05-09)
Using the ABC copolymer silicone surfactant polydimethylsiloxane (PDMS)-graft-(polyethylene oxide (PEO)-block-propylene oxide (PPO)) (PSEP, Scheme 1a) as a template and tetraethoxysilane (TEOS) as a silica source, silica particles with various structures and morphologies (i.e., disordered spherical micellar aggregation, two-dimensional p6mm mesostructure...
Kun Du et al.
Biotechnology progress, 31(1), 42-47 (2014-11-08)
Multiple enzyme mixtures are attractive for the production of many compounds at an industrial level. We report a practical and novel approach for coimmobilization of two enzymes. The system consists of a silica microsphere core coated with two layers of...
Daniela Pinna et al.
The Science of the total environment, 423, 132-141 (2012-03-10)
In this study, some mixtures of consolidants or water-repellent products and biocides developed to prevent biological growth, were tested over time on three stone substrates with different bioreceptivity. The performance of both traditional (tetraethylorthosilicate, methylethoxy polysiloxane, Paraloid B72, tributyltin oxide...
Pinghua Ling et al.
Biosensors & bioelectronics, 71, 373-379 (2015-05-08)
An electrochemical DNA sensor was developed based on the electrocatalysis of porphyrinic metal-organic framework (MOF) and triple-helix molecular switch for signal transduction. The streptavidin functionalized zirconium-porphyrin MOF (PCN-222@SA) was prepared as signal nanoprobe via covalent method and demonstrated high electrocatalysis...
Yonghai Song et al.
The Analyst, 140(2), 623-629 (2014-11-27)
A simple strategy to fabricate a fluorescent SiO2@zeolitic imidazolate framework-8 (ZIF-8) core-shell nanosensor for Cu(2+) detection was demonstrated in this work. The nanosensor was synthesized using carboxyl-functionalized SiO2 nanoparticles (SiO2 NPs) as a template to induce the growth of ZIF-8...
Daniela Paunescu et al.
ACS nano, 9(10), 9564-9572 (2015-08-11)
The concentrations of nanoparticles present in colloidal dispersions are usually measured and given in mass concentration (e.g. mg/mL), and number concentrations can only be obtained by making assumptions about nanoparticle size and morphology. Additionally traditional nanoparticle concentration measures are not...
Vesna Petrovska-Jovanovska et al.
International journal of pharmaceutics, 484(1-2), 75-84 (2015-02-25)
In this study, hybrid silica xerogel particles were developed as carriers of budesonide (BDS) for efficient local treatment of inflammatory bowel diseases (IBD). Organically modified silica particles (ORMOSILs) were prepared by co-condensation of 3-aminopropyltriethoxysilane (APTES) and tetraethyl orthosilicate (TEOS) by...
K C Barick et al.
Dalton transactions (Cambridge, England : 2003), 44(33), 14686-14696 (2015-07-29)
Magnetic luminescent hybrid nanostructures (MLHN) have received a great deal of attention due to their potential biomedical applications such as thermal therapy, magnetic resonance imaging, drug delivery and intracellular imaging. We report the development of bifunctional Fe3O4 decorated YPO4:Eu hybrid...
Julietta V Rau et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 103(8), 1621-1631 (2015-01-06)
The aim of this work was to deposit silicon-substituted hydroxyapatite (Si-HAp) coatings on titanium for biomedical applications, since it is known that Si-HAp is able to promote osteoblastic cells activity, resulting in the enhanced bone ingrowth. Pulsed laser deposition (PLD)...
Seong Cheol Hong et al.
International journal of nanomedicine, 6, 3219-3231 (2012-01-13)
Superparamagnetic iron oxide nanoparticles (SPIONs) have been widely utilized for the diagnosis and therapy of specific diseases, as magnetic resonance imaging (MRI) contrast agents and drug-delivery carriers, due to their easy transportation to targeted areas by an external magnetic field....
Nils R Blumenthal et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(45), 16124-16129 (2014-10-29)
Extracellular soluble signals are known to play a critical role in maintaining neuronal function and homeostasis in the CNS. However, the CNS is also composed of extracellular matrix macromolecules and glia support cells, and the contribution of the physical attributes...

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