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Antibacterial Nanoparticle Monolayers Prepared on

Cooperative electrostatic adsorption (CELA) is used to deposit monolayer coatings of silver nanoparticles on relatively chemically inert polymers, polypropylene, and Tygon. Medically relevant components (tubing, vials, syringes) coated by this method exhibit antibacterial properties over weeks to months with the coatings being stable under constantflow conditions. Antibacterial properties of

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Nanoparticles in modern medicine: State of the art and

SLNs were prepared from a cationic lipid in addition to a surfactant. DNA and Tat peptide were subsequently adsorbed onto the nanoparticle surface by electrostatic forces. When administered to the lungs of mice by either intratracheal instillation or aerosol application, increased gene expression was observed indicating successful transfection

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Nanoparticleenhanced chemoimmunotherapy to trigger

The pendant 2(diethylamino)ethyl methacrylate (DEAEMA) moieties serve as electron donors for the electrostatic interaction with the carboxyl group in DMXAA, providing efficient drug loading. The prepared nanoparticles enable efficient intracellular delivery of DMXAA and subsequently initiate a type I IFN–driven innate immune response.

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Pickering emulsions stabilized by composite nanoparticles

Oct 12, · Novel biobased composite nanoparticles were prepared through the electrostatic interaction between lysozyme (Lys) and amphiphilic dopaminemodified poly (γglutamic acid) (PGADA). The composite nanoparticles were used as particulate emulsifiers to stabilize white oil, forming gellike emulsions. When the concentr

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Electrostatic Selectivity in Protein Nanoparticle Interactions

electrostatic interactions. Goldbased nanoparticles contain a solid core which contributes little to interaction with proteins, while covalently coupled ligands yield surface groups with apparent competence for electrostatic, hydrophobic, or hydrogen bonding, with nanoparticle charge density easily manipulated by the degree of coupling.

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Anderson Explains Role of Nanoparticles in Vaccines | NIH

Sep 04, · His team has been able to silence 5 genes in the lung in vivo using nanoparticles, and he cited a report of 20 genes being knocked down by a single particle.. At the moment, all cells within the liver in animal models can be targeted, as can the endothelium of many organs, including kidney, liver, spleen, heart, skeletal muscle and lung.

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Efficient Synthesis of Stable Polyelectrolyte Complex

Dec 28, · Polyelectrolyte complex nanoparticles with integrated advances of coacervate complexes and nanomaterials have attracted considerable attention as soft templates and functional nanocarriers. Herein, a facile and robust strategy, namely electrostatic assembly directed polymerization (EADP), for efficient and scalable preparation of stable

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Appropriate salt concentration of nanodiamond colloids for

May 19, · Appropriate salt concentration of nanodiamond colloids for electrostatic selfassembly seeding of monosized individual diamond nanoparticles on silicon dioxide surfaces. Yoshikawa T(1)(2), Zuerbig V(1), Gao F(1), Hoffmann R(1), Nebel CE(1), Ambacher O(1)(2), Lebedev V(1).

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High Surface Area Mesoporous Silica Nanoparticles with

8 hours ago· Mesoporous silica nanostructures (MSNs) attract high interest due to their unique and tunable physical chemical features, including high specific surface area and large pore volume, that hold a great potential in a variety of fields, i.e., adsorption, catalysis, and biomedicine. An essential feature for biomedical application of MSNs is limiting MSN size in the submicrometer regime to control

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High Surface Area Mesoporous Silica Nanoparticles with

8 hours ago· Mesoporous silica nanostructures (MSNs) attract high interest due to their unique and tunable physical chemical features, including high specific surface area and large pore volume, that hold a great potential in a variety of fields, i.e., adsorption, catalysis, and biomedicine. An essential feature for biomedical application of MSNs is limiting MSN size in the submicrometer regime to control

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Preparation and Characterization of Sodium Alginate

Jul 08, · The chondroitin sulfate (CS)/sodium alginate (SA)/chitosan nanoparticles were prepared by electrostatic spraying technology. Laser particle size analyzer measurements indicated that the size of the particles is strongly affected by the weight ratio of raw materials, receiver rotation speed, injection rate, and so on. The size increased and size distribution moved towards the direction of large

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Elucidating Electrostatic SelfAssembly: Molecular

Feb 03, · Nanoparticles are prepared by electrostatic selfassembly of cationic polyelectrolyte dendrimers of different generations and oppositely charged multivalent organic dyes relying on the combination of electrostatic and ππ interactions. Different building blocks have been used to vary interaction strength, geometric constraints, and charge

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Preparation of serum capped silver nanoparticles for

Jun 02, · Such nanoparticles can bind to the bacterial surface mainly by electrostatic forces 13 and split bilayered lipid membrane with a Nanoparticles prepared from blood group matched serum of

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High Surface Area Mesoporous Silica Nanoparticles with

8 hours ago· Mesoporous silica nanostructures (MSNs) attract high interest due to their unique and tunable physical chemical features, including high specific surface area and large pore volume, that hold a great potential in a variety of fields, i.e., adsorption, catalysis, and biomedicine. An essential feature for biomedical application of MSNs is limiting MSN size in the submicrometer regime to control

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Superparamagnetic Nanoparticles with Mesoporous Structure

Magnetite nanoparticles have been successfully prepared by hydrothermal method from FeCl3 as starting material. The properties and morphology of the products with different synthesis time and FeCl3 concentration were investigated. Firstly, the FeCl3 with concentration of 0.05 – 0.15 M and 0.10 M sodium citrate as well as 0.15 M were mixed with distilled water containing 0.1 g polyethylene

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Electrostatic Interactions Enable Nanoparticle Delivery of

A 1% agarose gel was prepared in 1× trisacetateethylenediaminetetraacetic acid buffer adjusted to pH 7.4. The NPC samples were prepared by massing lyophilized powder for NP25/10 in 20 mL scintillation vials and adding PBS to make a concentration of 2.7 mg mL –1 (0.08 mM). Appropriate volumes of myricetin dissolved in DMSO at 25 mM were

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Properties and Applications of Silica Nanoparticles CD

The nanoparticles can be converted into hydrophobic ones through coupling different silanes to the nanoparticle surface. weak electrostatic repulsion forces, dehydration, and hydrogen bond formation. thus the silica nanoparticles have to be prepared with positively charged prosperity. Weak interactions are preferable between the

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Counterion effects in protein nanoparticle electrostatic

Apr 01, · Counterion effects in protein nanoparticle electrostatic binding: a theoretical study. Ghosh G (1). (1)UGCDAE Consortium for Scientific Research, Mumbai Centre, Trombay, Mumbai, India. Electronic address: [email protected]كسارة الحجر. Effects of counterions on the folding conformation of proteins, bound electrostatically on the surface of charge

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Tunable porous nanoallotropes prepared by postassembly

Oct 27, · Films of colloidal nanoparticles usually form dense, closepacked lattices. If binary lattices could be made and one component removed, then a more open array could form, as long as the remaining nanoparticles could be stabilized. Udayabhaskararao et al. formed binary superlattices of gold and magnetite nanoparticles at an airliquid interface that could then be transferred to carboncoated

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Electrostatic Spinning | Scientific.Net

The fiber samples with good crystallinity consist of a great quantity of nanoparticles. The size of each nanoparticle is below 50 nm and the fiber diameter is about 400 nm. Possible formation process of the nanofibers by electrostatic spinning was also discussed. PLGA fibers and fiber membrane was prepared by using electrostatic spinning

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Electrostatic SelfAssembly of Fe3O4 Nanoparticles on

Magnetite, Fe3O4, is a promising anode material for lithium ion batteries due to its high theoretical capacity (924 mA h g−1), high density, low cost and low toxicity. However, its application as high capacity anodes is still hampered by poor cycling performance. To stabilize the cycling performance of Fe3O4 nanoparticles, composites comprising Fe3O4 nanoparticles and graphene sheets (GS

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1. Introduction

The chondroitin sulfate (CS)/sodium alginate (SA)/chitosan nanoparticles were prepared by electrostatic spraying technology. Laser particle size analyzer measurements indicated that the size of the particles is strongly affected by the weight ratio of raw .

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Attachment of Li[Ni 0.2 Li 0.2 Mn 0.6 ]O 2 Nanoparticles

May 27, · The prepared Li[Ni 0.2 Li 0.2 Mn 0.6]O 2 nanoparticles were composited with graphene via electrostatic interactions. The commercial graphene (AMG Graphite/Graphit Kropfmühl) was immersed into the 1N acidic solution (nitric acid/sulfuric acid = 3:1) for 2 h for surface modification and washed several times using distilled water.

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Pickering emulsions stabilized by composite nanoparticles

Oct 12, · Novel biobased composite nanoparticles were prepared through the electrostatic interaction between lysozyme (Lys) and amphiphilic dopaminemodified poly (γglutamic acid) (PGADA). The composite nanoparticles were used as particulate emulsifiers to stabilize white oil, forming gellike emulsions. When the concentr

Get Price

The effect of surface charge on photocatalytic degradation

May 08, · Herein, a simple approach based on tailoring the surface charge of nanoparticles, NPs, during the preparation to boost the electrostatic attraction between NPs and the organic pollutant was

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Preparation and Characterization of Sodium Alginate

Jul 08, · The chondroitin sulfate (CS)/sodium alginate (SA)/chitosan nanoparticles were prepared by electrostatic spraying technology. Laser particle size analyzer measurements indicated that the size of the particles is strongly affected by the weight ratio of raw materials, receiver rotation speed, injection rate, and so on. The size increased and size distribution moved towards the direction of large

Get Price

Ibuprofenloaded nanoparticles prepared by a co

Nov 04, · Ibuprofenloaded nanoparticles prepared by a coprecipitation method and their release properties. Jiang B (1), Hu L, Gao C, Shen J. (1)Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China. A coprecipitation method was established to fabricate nanoscale coreshell particles, by which poor watersoluble

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Anderson Explains Role of Nanoparticles in Vaccines | NIH

Sep 04, · Years of experiments on animal models have shown that injected nanoparticles usually end up in the organs that filter blood—liver, spleen, bone marrow and kidney. But, as Anderson pointed out, "RNA or DNA is simply not a great drug. It does not cross cellular membranes. We need expression of these constructs to get function.".

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Electrostatically selfassembled twodimensional

Electrostatically selfassembled twodimensional magnetized MXene/hollow Fe 3 O 4 nanoparticle hybrids with high electromagnetic absorption performance and improved impendence matching† Baiwen Deng, a Zhicheng Liu, a Fei Pan, a Zhen Xiang, a Xiang Zhang a and Wei Lu * a

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Synthesis of Platinum Nanoparticles Using Electrostatic

Abstract: Platinum (Pt) nanoparticles were prepared by the liquidphase reduction of tetraammineplatinum (II) chloride ([Pt(NH3)4]Cl2) using Nafion as a stabilizer under various conditions of the Nafion phase. This method is novel in its use of electrostatic interactions between the Pt complex ions and sulfonic groups in the hydrated Nafion

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Nanoparticle Vaccines Adopting Viruslike Features for

Jun 09, · Electrostatic attraction between oppositely charged antigens and nanoparticles have been exploited to prepare nanoparticle vaccines. In general, cationic nanocarriers are prepared for the association of anionic protein antigens.

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The influence of negatively charged silica nanoparticles

Jan 09, · The presence of negatively charged nanoparticles affects the surface activity of anionic surfactants in an aqueous phase. Recent studies suggest that electrostatic repulsive forces play an important role in increasing the surface activity of surfactants. However, the addition of nanoparticles .

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