Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"nanohybrids"”.
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TiO2-PMMA nanohybrids of enhanced nanocrystallinity
… investigation has been conducted into TiO2-PMMA nanohybrids derived from wet chemistry methods, aimed at understanding the mechanisms responsible for the amorphous TiO2 phase in nanohybrids, which cannot be avoided under the conditions tolerable by PMMA matrix. The largely amorphous TiO2 state is …
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Smart organic-inorganic nanohybrids of functionalized silsesquioxane nanoparticles
… and characterization of smart organic-inorganic nanohybrids was studied. The inorganic part was formed by N,N-di(2,3-di¬hydroxy¬propyl)¬3-amino¬propyl¬functional silsesquioxane nanoparticles being highly functionalized with ca. 14 tertiary amino groups per particles, each amino group bearing four …
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Preparation and Characterization of Single Walled Carbon Nanotubes Poly(3-hexylthiophene) Nanohybrids
In this work a purification method for carbon nanotubes was first developed. Purified nanotubes were characterized by AFM, TGA, RAMAN, NIR-PL and then used to prepare composite materials in conjunction with semiconducting polymers. Electrical and optical properties of this composite material were …
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Synthesis of reponsive homo- and block copolymers - application to the generation of inorganic-organic nanohybrids
… were utilized to generate inorganic-organic nanohybrids by the in situ reduction of gold or silver salts to generate nanoparticles inside the nanocarrier. Another strategy of cross-linking was also investigated by using amino-functional silsesquioxane nanoparticles. In water around neutral pH …
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Engineering Nanoparticle And Nanoring Patterns For The Study Of Molecular Crystallization Under Nanoconfinement
… and functional groups and then fabricate the nanohybrids with fatty acid nanorods by spin coating method. Atomic force microscope monitors the topography of the hybrid nanostructures to help understand the underlying mechanism of the crystallization process. This successful self-assembled …
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Controlling Triplet Excitons in Organic Semiconductors with Lanthanide-Doped Nanoparticles
… energy transfer measurements in LnNP@OSC nanohybrids. Using transient absorption spectroscopy (TAS), we show triplet energy transfer (TET) to be governed by a concerted Dexter-type process. Contrary to previous beliefs, we find near-unity TET efficiencies that are independent of distance …
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METAL NANOSTRUCTURES-ENHANCED AIE-BASED PHOTOSENSITIZERS FOR PHOTODYNAMIC THERAPY
… In this Ph.D. work, different metal/AIE-PS nanohybrids with metal-enhanced SOG have been developed.
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The Impact of Surface Modified Nanoparticles on the Performance of Polymer Solutions for Heavy Oil Recovery
… this research are 1) development of new polymer nanohybrids which enhanced heavy oil recovery, 2) formulation of new synthesis routes for polymer nanohybrids which improved the dispersivity of the NPs into the polymer solutions and the resistance of the polymer solutions to salinity and …
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Study Of Tin-Based Electrodes And Ionic Liquid Electrolytes For Energy Storage Materials
… rechargeable Li-oxygen batteries. SnO2/graphene nanohybrids and carbon-coated SnO2 as well as Sn nanostructured materials are prepared using new approaches and optimized conditions to achieve high Li-ion battery performances. Systematic structural, morphological, and electrochemical studies are …
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Polymer/clay nanocomposite hydrogels with anisotropic properties
… of the dispersed phase.<br/><br/>MMT-IO nanohybrids at a 2:1 clay to magnetite weight ratio showed suitable magnetic properties and surface characteristics to be used in the preparation of PAAm/MMT-IO and PNIPAM/MMT-IO nanocomposite hydrogels. These materials showed swelling ratios that …
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Modeling Epithelial Ovarian Cancer In The Mouse
… MPM/SHG. Moreover, we identified layered nanohybrids as suitable particles for combination of intravital biomedical imaging with controlled drug release. As the first step to determine whether EOC arises from the stem cell compartment we have identified an OSE subpopulation which is …
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Synthesis and Electrocatalytic Properties of Structure Engineered First-Row Transition Metal Derivatives
… hydrazine oxidation, respectively. FeNi₃/NiFeOₓ nanohybrids have been thoroughly characterized for HER and oxygen evolution reaction (OER). Nano-on-micro Cu has been explored as a highly efficient catalyst towards electro-oxidation of hydrazine. Cobalt hydroxide carbonate with rich grain …
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Exploiting plasmons to sense interfacial changes at the nanoscale
Probing chemistry, especially at the nanoscale, provides insight into the mechanisms governing chemical reactions at interfaces and potential avenues for materials development. As a class of materials, plasmonic nanomaterials are a promising approach for probing chemistry at interfaces. When …
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Graphene derivatives for Li-ion batteries
… porous and conductive peony-like graphene/NiO nanohybrids. The integration of graphene enhances the current flow of NiO while also effectively regulating the restacking and aggregation of nanoparticles. Despite these advantages, practical challenges arise for NiO as a commercial anode in Li-ion …
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Synthesis and Self-Assembly of Novel ABC Miktoarm Star Terpolymers
… star terpolymer the successful formation of nanohybrids containing gold nanoparticles within the P2VPq phase is demonstrated. In the second system the low-Tg PB segment was replaced by a second PS block of different length (SVqS’). Even though vesicles serve as initial building units, the …
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An assessment of the dietary bioavailability of TiO2 and inorganically carbon-based nanomaterials in rainbow trout, using the ex vivo gut sac technique and a in chemico digestibility assay
… bioaccumulation potential. Graphene oxide gold nanohybrids (Au-GO) were compared to a soluble salt AuCl. The in chemico digestibility assay indicated Au-GO had dose dependant bioacessablilty, with a 10 mg kg-1 diet releasing 27% of the dose in simulated stomach conditions, significantly higher …
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Photochromic Molecular Materials for the Controlled Organization of Nanoparticles
The displacement of polystyrene nanoparticles promoted by bulk azo mass transfer using interferential light illumination will be discussed. For this a variety of different push pull small azo molecules were synthesis and characterized, changing the polarity, hydrophobicity and bulky groups around …