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.
Results
Showing 1 to 20 of 20 for “"surface functionalisation"”.
-
Surface functionalisation techniques for colloidal inorganic nanocrystals
… the synthesis of a thin silica layer upon the surface of nanocrystals is demonstrated. The method uses the hydrophobic interaction between an amphiphilic polymer and nanocrystal ligands to provide a foundation for growth of a silica layer. The coated nanocrystals are characterised using a wide …
-
Surface Functionalisation and Characterisation of Cellulose Nanocrystals
… materials. All these applications depend on the surface properties of CNCs, therefore reliable quantitative characterisation methods of these properties are required. The chemical groups available at the CNC surface are a function of the extraction process used. For CNCs extracted with sulfuric …
-
Spectroelectrochemical, Separation and Surface Functionalisation Studies of Plasmonic Nanoparticles
… sensors. These properties arise from localised surface plasmon resonances (LSPR), which are resonant oscillations of the free electron cloud in metal nanoparticles of sizes less than the wavelength of incoming light. Understanding nanoparticle synthesis and structure is key towards controlling …
-
Surface Functionalisation of Metal-Organic Frameworks for Biomedical Applications
… release, and easily functionalisable external surface. This thesis describes the use of MOFs for several biomedical applications. First, the synthesis procedures for different nanoMOFs were optimised based on the coordination modulation method by studying the effect of reaction time, amount of …
-
Surface functionalisation of encoded SU-8 microparticles and their uses in multiplexed suspension biological assays
… codes. In this thesis, the preparation and surface modification of different diffractive microparticles; the attachment of a range of biological molecules (e.g. proteins and peptides) onto the functionalised surfaces; and different on-bead analytical techniques for surface characterisation …
-
Synthesis of Sustainable Antibacterial Materials by Surface Functionalisation of NZ Flax (Phormium tenax) Fibres and Hemp (Cannabis sativa) Hurd
… This thesis summarises the investigation of functionalisation of Phormium tenax (NZ flax) fibre (PTF) and hemp hurd core of Cannabis sativa (HH) through surface grafting of chitosan 1, a potent novel chitosan derivative 132 (selected for the excellent bioactivity from a set of …
-
Plasma-Enhanced Continuous Carbon Fibre-Reinforced Composites Manufactured from Recycled Thermoplastics
… understanding of continuous carbon fibre (CF) surface functionalisation by atmospheric pressure plasma jet (APPJ) treatments with dry air working gas, then incorporate this understanding to enhance continuous CF-reinforced thermoplastic tape manufactured with novel techniques to facilitate the …
-
Plasmachemical Functionalisation for Modification of Surfaces with Biomolecules and Metals
Plasmachemical functionalisation offers a versatile route to surface functionalisation, allowing a wide variety of functional groups to be deposited in a substrate independent process. This thesis presents the application of pulsed plasmachemical functionalisation in two areas. Firstly, the …
-
Building and Exploring Databases of Porous Materials for Adsorption Applications
… from different chosen families, with specific surface functionalisation, chirality, as well as channel and framework dimensionalities. The obtained information, along with their geometric characterisation was made accessible via an online interactive data visualisation platform, thereby mapping …
-
Surface Functionalised Emulsion- Templated Porous Polymers for In- Vitro Cell Culture
… requires extra processing steps to hydrate the surface before use as a support for cell culture. This thesis addresses routes to surface functionalise these PolyHIPEs for the specific aim of optimising 3D in-vitro cell culture materials. Specific routes to this include chemical modification, …
-
The development and evaluation of multifunctional silver iron-oxide hybrid nanoparticles towards enhanced pancreatic cancer therapy
… evaluated for heat generation at the particle surface. Upon irradiation with a femtosecond laser at 1040 nm, AgHNPs showed rapid heat generation (reaching temperatures around 40 °C in 5 s). The heat generation was localised and the particles did not show retention of the maximum temperature …
-
Engineering the Iontronic Properties of Nanoporous Anodic Alumina and Its Applications
… for iontronic systems due to its ease of surface functionalisation, tunable pore size, high pore density and excellent mechanical stability. More importantly, NAA exhibits an inherent ionic current rectifying effect due to its barrier oxide layer (BOL). The hemispherical BOL closing the …
-
The synthesis, structure and chemistry of some novel organometallic dendrimers
… as well as a hybrid block copolymer. The surface functionalisation of bromobenzyl-terminated dendrimers was attempted. The data are discussed and some properties and reactions of the compounds are described. The x-ray crystal structures of a dendritic precursor, [CpFe(CO)₂(CH₂)₃Br] (space …
-
Analyte sensing with luminescent quantum dots.
… light scattering (DLS) and by a UV-vis method. Surface functionalisation of these synthesised QDs (chapter 4) with mercaptosuccinic acid rendered them water soluble and were shown to display selectivity for Cu2+ over a number of biologically relevant metal ions. The negatively charged surface of …
-
Evaluación in-vitro de Cr-PEEK como biomaterial alternativo a los materiales tradicionales en implantología dental
… were subjected to the same rapid, low-cost surface functionalisation with sodium hydroxide (NaOH) to evaluate the influence of this treatment on their behaviour. The overarching goal is to determine whether Cr-PEEK, a relatively novel composite, can equal or surpass the in vitro performance …
-
Opportunities for multimodal quantum sensing in intracellular environments
… even at high concentrations, amenability to surface functionalization, and robustness against changes in pH, this makes NVs a promising candidate for sensing in biological systems. This optical addressable spin-based quantum sensor can address a wide selection of sensing modalities, from …
-
Electrochemical CO2 reduction on Cucurbit[n]uril modified Gold
… more broadly. In this thesis, gold surfaces were functionalised with cucurbit[n]uril (CB[n]) macrocycles to form a hybrid organic-inorganic model system capable of influencing the local chemical environment of gold as a heterogeneous CO2 reduction electrocatalyst. This supramolecular …
-
Development of stationary phase materials and methods for analysis of pharmaceuticals via high-performance liquid chromatography and electrochemical detection
… detector (EDX) confirmed the stepwise silica surface functionalisation. The Nafion-coated phases were evaluated for ion-exchange retention behaviour after they were slurry-packed into stainless steel columns (2.1 x 30 mm). These columns were applied to the separation of pharmaceutically-active …
-
DNA Inspired Tools for Biosensor Design
… the Cu (II) specific DNAzyme immobilised on the surface of a gold electrode. A self-polymerising PDA coating was employed to entrap both the DNAzyme and gold nanoparticles, resulting in a Cu (II) sensor with a low limit of detection (180 nM) and a linear range of 1 – 100 μM. This represents a …
-
Zirconium-based Metal-Organic Frameworks for Pleural Mesothelioma Therapy
… mesothelioma, carboplatin and pemetrexed. The surface functionalisation process was then simplified from two steps (bilayer coating) to one step using a phosphate anchored polyethylene glycol (PEG) to improve the stability of MOF in three types of cellular media. The number of cell line was …