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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 57 for “"AuNP"”.
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Transport, Stability, and Deposition of Gold Nanoparticles in Porous Media
Gold-nanoparticle (AuNP) transport in groundwater is heavily influenced by the intrinsic properties of the nanoparticles and the external parameters of the environment. Batch experimental data indicated that 15 nm AuNP coated by bovine serum albumin (BSA-AuNP) was more stable at high ionic strength …
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Surface Enhanced Infrared Absorption on Au Nanoparticle Films for Optical Biosensing
… on wet chemically prepared Au nanoparticle (AuNP) films. Optical properties of AuNP films were investigated with VIS spectroscopy; it was shown, that it is possible to describe these properties with effective media theories. The SEIRA activity was analysed by FTIR spectroscopy of adsorbates …
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A Monte Carlo-based Model Of Gold Nanoparticle Radiosensitization
… of radiation at the tumour. Gold nanoparticles (AuNP) represent a novel radiosensitizer with unique and attractive properties. AuNPs enhance local photon interactions, thereby converting photons into localized damaging electrons. Experimental reports of AuNP radiosensitization reveal this …
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RAPID COLORIMETRIC IDENTIFICATION OF ESCHERICHIA COLI SHIGA TOXINS 1 AND 2, AS WELL AS EAE AND AGGR, USING LOOP MEDIATED ISOTHERMAL AMPLIFICATION FOLLOWED BY PNA/AUNP DETECTION
… was introduced, along with gold nanoparticles (AuNP). The PNA-AuNP detection system does not depend on pH change, rather an aggregation or monodispersing of gold nanoparticles that is sequence specific. When the PNA probe detects the specified DNA sequence, it produces a distinguishable color …
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Self-Assembly, Spatial-, and Size- Control of Gold Nanoparticle/Block Copolymer Conjugates
… and self-assembly of gold nanoparticles (AuNP) with functional block copolymers of styrene and 4VP (S4VP) in solution were presented. S4VP block copolymers with different block lengths of 4VP were synthesized via sequential living anionic polymerization. Two different approaches of …
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Synthese und Charakterisierung von bi-supramolekularen Nanokompositen: Chemische Verknüpfung von Goldnanopartikeln mit neuen flüssigkristallinen Cellulosederivaten
… cholesterischen LC Cellulosederivats und AuNP analysiert. Durch unterschiedliche Nanokompositzusammensetzungen konnten die ausgebildeten bi-supramolekularen Strukturen sowie die Produkteigenschaften variiert werden. Für eine chemische Verknüpfung von Cellulose an AuNP-Oberflächen werden …
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Enhancing the radio sensitivity of prostate cancer using RALA Gold nano-complexes
… focus on the use of gold nanoparticles (AuNP). AuNP are effective radiosensitisers, however, clinical translation is impeded by short systemic circulation, poor stability and target cell uptake. This thesis employs the cell penetrating peptide RALA to enhance AuNP cell internalisation and …
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GLYCOSAMINOGLYCAN COATED GOLD NANOPARTICLES FOR TARGETED BREAST CANCER THERAPY
… of a wide range of compounds. In this study, AuNP-oHA and AuNP-CS were synthesized using the ‘one-pot’ synthesis method. Both AuNP-oHA and AuNP-CS exhibited selective cytotoxicity to cancerous cells, showing that these two AuNPs can be potential chemotherapeutic agents that are specific to …
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Kinetically Controlled Synthesis of Triblock Copolymer Stabilized Gold Nanoparticles
… One viable approach is the synthesis of AuNPs from tetrachloroauric(III) acid (HAuCl4) using triblock copolymers (TBPs). However, a major challenge of using TBPs is the heterogeneous nature of the formed nanocrystals. Establishing control over AuNP size and shape requires a detailed …
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Sustainable Nanotechnology: Life Cycle Thinking in Gold Nanoparticle Production and Recycling
… the life cycle impacts of gold nanoparticle (AuNP) production. The LCA studies were focused on three aspects of AuNP synthesis: 1) the use of bio-based ("green") reducing agents; 2) the potential for recycling gold from nanomaterial waste; and, 3) the reduction of the life cycle impacts of …
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Visualization, Characterization, and Analysis of Gold Nanoparticles Fate and Transport in Aqueous Porous Media Environment with Advanced Photonics Technique
… to the water environment. Gold nanoparticles (AuNP) were used as a model nanomaterial to investigate the fate and dynamics of nanoparticles in the complex water environment. A column study was performed to examine the fate and transport of gold nanoparticles with two different coatings in …
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DEVELOPMENT OF A RAPID DIAGNOSTIC ASSAY FOR THE COLORIMETRIC DETECTION OF BACTERIAL AND VIRAL PATHOGENS USING LOOP-MEDIATED ISOTHERMAL AMPLIFICATION COUPLED WITH A PEPTIDE NUCLEIC ACID AND GOLD NANOPARTICLE REPORTER SYSTEM
… nucleic acid (PNA) probe and gold nanoparticle (AuNP) detection system that results in a colorimetric assay. By employing modified LAMP primers, the target-dependent, co-amplification of a novel, sequence is generated, which serves as the target for PNA/AuNP sequence-specific detection. This …
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Smart hybrid materials with tailored functions
… sich mit der Verteilung von Gold-Nanopartikeln (AuNPs) in stimuli-sensitiven Polymerbürsten, die an planare Oberflächen gebunden sind. Die Farbänderung solcher Bürsten/AuNP Hybride hängt von der Partikelbeladung und deren Abstand zueinander ab. Folglich, eine Kontrolle der Partikelverteilung in …
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Utilização de nanoestruturas de ouro como agentes de compensação óptica para análise de cárie incipiente na tomografia por coerência óptica
… foi avaliar nanopartículas esféricas de ouro (AuNP), nanobastões de ouro (AuNR) e glicerol como ACOs em imagens de tomografia de coerência óptica (OCT) de molares com lesões de cárie incipientes para melhorar o diagnóstico desta condição. Dez dentes molares extraídos com lesões de cárie …
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Supramolecular Nanostructures as Support Materials for Gold Nanoparticle Catalysts
… high catalytic activity of gold nanoparticles (AuNPs) has led to their use in a variety of industrially-relevant reactions, such as low-temperature CO-oxidation and selective alcohol oxidation. Most current research focuses on heterogenous gold catalysis, with metal oxides being the most …
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Investigation of Electrostatic Assembly of Gold Nanoparticles Mediated by Giant Polyoxomolybdate Clusters
… (Mo-132c) with cationic gold nanoparticles (AuNPs) was explored for the first time. The rapid electrostatic assembly from nanoscopic entities to micron scale aggregates was observed upon precipitation, which closely matched the point of aggregate electroneutrality. Successful assembly was …
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Noncovalent adsorption of nucleotides in gold nanoparticle DNA conjugates : bioavailability at the bio-nano interface
… between gold nanoparticles and thiolated DNA (AuNp-DNA). Base specific noncovalent nucleotide adsorption on gold surfaces can affect nucleotide bioavailability in solution. Systematic investigation of DNA oligonucleotide sequence, the location of specific sequence motifs, and the effect of …
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Photophysics of Biological and Synthetic Multichromophoric Systems : Spectroscopic Investigations of Bacterial Light-Harvesting Complexes and of Carbonyl-Bridged Triarylamine Derivatives
… system built from a spherical gold nanoparticle (AuNP) and a light-harvesting complex II (LH2), another light-harvesting complex from purple bacteria, -two novel artificial light-harvesting systems, based on carbonyl-bridged triarylamines (CBTs) Different methods of optical spectroscopy and …
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Engineering Gold Nanoparticles And Their Use To Control Nucleation
… hybrid nanostructures using gold nanoparticles (AuNP) as seeds and partially oxidized potassium tetracyanoplatinate, known as Krogmann’s salt (KCP), and later this method will be employed to manufacture a prototype sensor for detecting different vapors. Nanocrystals are synthesized using …
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Surface-Enhanced Raman Spectroscopy for Environmental Analysis: Optimization and Quantitation
… gold nanoparticle/bacterial cellulose (AuNP/BC) substrates were developed to improve SERS sensitivity by increasing hot spot density within the laser excitation volume. Environmentally relevant organic amines were fixed at "hot spots" by lowering solution pH below the analyte pKa and …
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