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 20 of 20 for “"nanohybrid"”.
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Facilitating Non-Covalent Interactions: 'Nanoglue' for DNA-CNT Nanohybrid Complexes
Polyamine-terminated first and second generation Newkome dendrimers possessing a perylene core were synthesised. Interactions were probed between carbon nanotubes and the perylene core. The DNA binding ability of the dendrimers was tested. As with similar, non polyamine terminated perylene …
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Study of controlled release of dapsone from modified montmorillonite and polymer matrices
… in the interlayers of MMT-Na+ to produce a nanohybrid. In the second part of the research, the nanohybrid was melt dispersed in the polymer to produce ternary (API/ Clay/ Polymer) composites. For comparison, API-polymer solid dispersions were prepared by melt mixing in the absence of …
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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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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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V- Shaped Defects – Epidemiology, Clinical Picture and Obturation Opportunities // Клиновидни дефекти – епидемиология, клинична картина и възможности за обтуриране
… and simulation analysis. The universal nanohybrid photo composite is most suitable for v-shaped defects. It exhibits the lowest micro-penetration compared to the other two materials used. The obstruction's success over time also depends on clinical factors - the location of the defect at …
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Design of Iron Oxide-Flavin Nanocomposite Bacterial Cellulose Hydrogels
… created that can integrate into BC, thus forming nanohybrid photoactive hydrogels. The hybrid gels have shown potential in their applicability to wastewater remediation due to their photoactivity, mechanical strength, porosity, durability, and biocompatibility. Ƴ-Fe2O3 IONPs were first synthesized …
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Shear Bond Strengths Of A Two-Step Self-Etch Adhesive And A Three-Step Etch-And-Rinse Adhesive In Artificial Dentin Caries Lesions Of Various Depths: An In Vitro Study
… (OptiBond FL) adhesive for bonding to a nanohybrid composite resin. TMR analysis determined lesion depth. Specimens were stored for 30 days in Millipore water (5oC), shear bond strengths were measured, and failure modes observed. Two-way ANOVA with interactions evaluated the effects of …
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Exploring the variability in mechanical property testing of dental resin composites
… mechanical properties of “microhybrid”, “nanohybrid” and “nanofilled” RBCs. Also, the inconsistency in mechanical property testing of RBCs is evident amongst researchers. This research explored the variability in experimental and statistical testing methodologies of RBCs. The current study …
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Study of controlled release of active pharmaceutical ingredients from functionalized nanoclays and polymer matrices
… Pharmaceutical Ingredients (APIs) to produce nanohybrid API carriers intended to be used alone or in acrylic polymer matrices, b) comparison of binary systems containing the above APIs in the selected acrylic polymers in terms of their miscibilities with the polymer, but in the absence of …
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Nanofibrillation of lignocellulosic biomass into lignin-containing nanocellulose for 3D printing and antimicrobial applications
… route. With optimized Au/Ag ratio, a Ag-Au-AgCl nanohybrid-LNC samples showed extraordinary antibacterial activity against both Gram-positive and Gram-negative species. In 3D printing, a series of all LNC-based inks were prepared with specifically controlled lignin and hemicellulose contents. …
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Graphene derivatives for Li-ion batteries
… In Chapter 4, a graphene-incorporated NiO nanohybrid is introduced as an advanced anode for Li-ion batteries. The integration of graphene into NiO nanostructures is achieved through a novel one-step in situ hydrothermal process, yielding distinctive porous and conductive peony-like …
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Design, development and characterization of nanostructured electrochemical sensors
… a carbon quantum dot (CQD) and gold nanoparticle nanohybrid system. CQDs, are a new class of carbon-based materials and have been used here for the first time as a matrix component integrated onto microfabricated gold electrode surfaces for enzyme immobilization and further miniaturization. The …
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Hybrid Nano-systems Based on PEGylate Porphyrins: Synthesis, Characterization and Theranostic Applications
… the field of application and efficiency of these nanohybrid systems. In synthesis, upon validation of the functioning of the system, the synthesis strategy can be adapted to functionalize and/or co-functionalize the nanoparticles also with active targeting agents to limit the accumulation …
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Controlling Triplet Excitons in Organic Semiconductors with Lanthanide-Doped Nanoparticles
… in a variety of organic–inorganic LnNP@OSC nanohybrid systems. We present the first direct distance-dependent 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 …
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Synthesis of reponsive homo- and block copolymers - application to the generation of inorganic-organic nanohybrids
… by ATRP for subsequent polymer-protein nanohybrid generation. This temperature-responsive polymer was polymerized directly in pure water at a low temperature (4 ºC) by using a functional ATRP initiator which allows post-polymerization conjugation. Without the addition of Cu(II), the …
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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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Polymer-based Graphene Oxide Derivatives as a tunable multi-purpose platform
… of an on-demand tunable antimicrobial nanohybrid system, composed of Graphene-Polymer and Silver Nanoparticles, is here reported (Chapter 5). The synthetic approach was deeply discussed, focusing on single aspects: the reduction of the GO moiety through a microwave-assisted approach; …
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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 …