A5088591248- Nanomaterials for catalytic reactions
- Advanced Polymer Synthesis and Characterization
- Catalytic Processes in Materials Science
- Nanoparticle-Based Drug Delivery
- Dendrimers and Hyperbranched Polymers
- Mesoporous Materials and Catalysis
- Surfactants and Colloidal Systems
- Iron oxide chemistry and applications
- Catalysis for Biomass Conversion
- Conducting polymers and applications
- Polymer Surface Interaction Studies
- Advanced Battery Materials and Technologies
- Catalysis and Hydrodesulfurization Studies
- Block Copolymer Self-Assembly
- Copper-based nanomaterials and applications
- Characterization and Applications of Magnetic Nanoparticles
- ZnO doping and properties
- Advancements in Battery Materials
- Quantum Dots Synthesis And Properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Magnetic Properties and Synthesis of Ferrites
- Electrochemical sensors and biosensors
- Metal-Organic Frameworks: Synthesis and Applications
- Chalcogenide Semiconductor Thin Films
- Bacteriophages and microbial interactions
Indiana University Bloomington
2016-2025
Tver State Technical University
2013-2025
King Abdulaziz University
2013-2022
A. N. Nesmeyanov Institute of Organoelement Compounds
2008-2021
Indiana University – Purdue University Indianapolis
2006-2020
Bloomington Health Foundation
2015-2017
Texas State University
2015
Russian Academy of Sciences
1997-2011
Forschungszentrum Jülich
2004-2010
Indiana University
2009-2010
The dependence of iron oxide nanoparticle formation on the structure and thermal properties Fe oleate complexes has been studied using FTIR, elemental analysis, X-ray photoelectron spectroscopy, differential scanning calorimetry (DSC), diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM. combination DSC allowed us to reveal differences between structures for as-synthesized postsynthesis treated (drying extraction with polar solvents) compounds. As-synthesized was...
Noble metal nanoparticles have been used for more than 2000 years. Applications currently under discussion include solar cell technology, catalysis, and nonlinear optics, where the enormous interfacial surface area of colloidally dispersed metals their unique electronic properties resulting from size quantization are exploited. The problem stability these materials has addressed by using amphiphilic copolymer micelles (see figure) as a nanostructured stabilization environment particles...
Incorporation of CdSe/ZnS semiconductor quantum dots (QDs) into viral particles provides a new paradigm for the design intracellular microscopic probes and vectors. Several strategies incorporation QDs capsids were explored; those functionalized with poly(ethylene glycol) (PEG) can be self-assembled minimal release photoreaction products enhanced stability against prolonged irradiation.
Interaction of poly(2-vinylpyridine)−poly(ethylene oxide) (P2VP-b-PEO) diblock copolymers with noble metal compounds in aqueous media and nanoparticle formation such systems were studied. In all cases, the characteristics micelles filled strongly depend on nature geometry compound, which, turn, influences morphology finally produced nanoparticles. Metal compound addition induces micellization even at very low pH values, where P2VP-b-PEO block are dissolved molecularly. The driving force a is...
Efficient encapsulation of functionalized spherical nanoparticles by viral protein cages was found to occur even if the nanoparticle is larger than inner cavity native capsid. This result raises intriguing possibility reprogramming self-assembly structural proteins. The iron oxide nanotemplates used in this work are superparamagnetic, with a blocking temperature about 250 K, making these virus-like particles interesting for applications such as magnetic resonance imaging and biomagnetic...
Magnetically recoverable catalysts containing Ru/RuO<sub>2</sub> and iron oxide nanoparticles show remarkable activity selectivity in nitrobenzene-to-aniline hydrogenation.
Monometallic and bimetallic colloids were prepared in micelles of the block copolymer polystyrene-b-poly-4-vinylpyridine toluene analyzed by electron microscopy various techniques X-ray analysis. These metal studied hydrogenation cyclohexene, 1,3-cyclooctadiene, 1,3-cyclohexadiene. A strong influence synthetic pathway to type reducing agent on catalytic activity was found. The lowest observed for N2H4·H2O reduction which is related a morphology where only small number noble-metal embedded...
[15] This is a high-concentration synthesis in which the solidified inorganic compound copy of original phase structure, that its structure predetermined by selection template phase. They used lyotropic liquid-crystalline phases, derived from surfactants or–later–block copolymers, [15±17]
Nuggets and threads form upon reduction of gold salts under various reaction conditions in nanometer-sized polymer gel particles (see picture on the right). Due to their structure resulting elasticity, these microgels create local environment that, as with biomineralization, favors production ordered nanostructures. Thus, size shape control are not restricted living organisms, but also possible synthetic colloid systems.
Micellization of a poly(ethylene oxide)-block-poly(4-vinylpyridine) (PEO45-b-P4VP28) copolymer in water during metalation (incorporation gold compounds and nanoparticle formation) with three types compounds, NaAuCl4, HAuCl4, AuCl3, was studied using dynamic light scattering (DLS) transmission electron microscopy (TEM). The transformations the PEO45-b-P4VP28 block micelles were found to depend on number parameters including thermal history as-prepared copolymer, type metal compound, loading....
Here, we report the synthesis, characterization, and properties of novel nanohybrids formed by self-assembly negatively charged MoS2 nanoplates positively iron oxide nanoparticles (NPs) two different sizes, 5.1 11.6 nm. Iron NPs were functionalized with an amphiphilic random copolymer, quaternized poly(2-(dimethylamino)ethyl metacrylate-co-stearyl metacrylate), synthesized for first time using atom transfer radical polymerization. The influence fraction NP size on structure has been studied....
Here we report the functionalization of monodisperse iron oxide nanoparticles (NPs) with commercially available functional acids containing multiple double bonds such as linolenic (LLA) and linoleic (LEA) or pyridine moieties 6-methylpyridine-2-carboxylic acid, isonicotinic 3-hydroxypicolinic 6-(1-piperidinyl)pyridine-3-carboxlic acid (PPCA). Both groups can be reacted noble metal compounds to form catalytically active species in exterior magnetic NPs, thus making them promising magnetically...
Here, a systematic study of magnetite nanoparticle (NP) formation in the presence functional polyphenylenepyridyl dendrons and dendrimers different generations structures (such as focal groups, periphery combination phenylene pyridyl moieties) has been reported. For certain dendron/dendrimer concentrations structures, well-dispersible, multi-core, flower-like crystals are formed which display ferrimagnetic-like behavior. It is noteworthy that least complex second generation with carboxyl...
This article demonstrates the encapsulation of cubic iron oxide nanoparticles (NPs) by Brome mosaic virus capsid shells and formation, for first time, virus-based (VNPs) with cores. Cubic NPs functionalized phospholipids containing poly(ethylene glycol) tails terminal carboxyl groups exhibited exceptional relaxivity in magnetic resonance imaging experiments, which opens way vivo MRI studies systemic movement plants. Preliminary data on cell-to-cell long-distance transit behavior VNPs...
We report a novel method for development of magnetically recoverable catalysts prepared by thermal decomposition palladium acetylacetonate in the presence iron oxide nanoparticles (NPs). Depending on conditions, reaction results either dispersed mixture Pd and NPs or their aggregates. It was demonstrated that loading, temperature, solvent, NP size composition are crucial to control product including degree aggregation NPs, catalyst properties. The controlled polarization magnetic forces...