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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 32 for “"Molecular Self Assembly"”.
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Molecular self assembly in flurocarbon surfactant / water systems
The work presented is a continuation of the study of a homologous series of tetrabutylammonium perfluoroalkylcarboxylate surfactants in water. These systems showed phase behaviour uncharacteristic of ionic perfluorocarbon surfactant systems in that they exhibit a clouding phenomenon with increasing …
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Molecular Self-Assembly of Carbon Nanosheets via AFM Nanoprinting
… bottom-up nanofabrication approach by combining molecular self-assembly with atomic force microscopy (AFM), which we believe has the potential to create devices with unprecedented properties and functionalities in both the technological and biological domains. To this end, we first present the …
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Polyglutamine monomer structure and its implications for molecular self-assembly
Polyglutamine is a naturally occurring peptide found within several proteins in neuronal cells of the brain, and its aggregation has been implicated in several neurodegenerative diseases, including Huntington's disease. The resulting aggregates have been demonstrated to possess ~-sheet structure, …
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Nanostructured gene and drug delivery systems based on molecular self-assembly
Molecular self-assembly describes the assembly of molecular components into complex, supramolecular structures governed by weak, non-covalent interactions. In recent years, molecular self-assembly has been used extensively as a means of creating materials and devices with well-controlled, …
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The role of repulsive interaction in molecular self-assembly on insulating surfaces
… by the adsorbed molecules. The molecules can self-assemble, driven by attractive and repulsive intermolecular interactions and interactions between the molecules and the surface. The research on molecular self-assembly aims to understand and control these interactions and the self-assembly …
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Scanning Probe Microscopy Study of Molecular Self Assembly Behavior on Graphene Two-dimensional Material
… materials required for potential applications. Molecular self-assembly behavior on graphene is a key method to investigate the mechanism of interaction between molecules and graphene and the promising applications related to molecular devices. In this thesis, we report the molecular …
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Molecular Self-assembly of Functionalized Pentacenes and Fullerenes on Metal Surfaces by STM and DFT Investigations
… composed essentially of carbon-based organic molecular materials, have attracted considerable scientific and industrial attentions because of their economic and environmental benefits. It is advantageous to have the comprehension of the molecular structures and interfacial morphologies for …
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Applying scanning probe microscopy for the investigation of molecular self-assembly mechanisms and properties of designed nanomaterials
… surface characterizations of nanomaterials and molecular self-assembly processes is emerging as an important contribution in nanotechnology, especially towards the design of molecular electronic devices. Another area of importance is the characterization of the properties of nanomaterials for …
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Design, fabrication, and characterization of complex, multilayer heterostructures of conjugated and non-conjugated polymers via molecular self-assembly
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Part I. Molecular Tweezers: Synthetic Receptors for Nucleotide Bases. Part II. Molecular Self-Assembly: Design of a Helical Aggregate
… design, syntheses, and complexation studies of molecular tweezers containing active site carboxylic acids are discussed. The strength, nature, stoichiometry, and geometry of the complex between molecular tweezer 28 and 9-propyladenine was studied. The cooperativity of hydrogen bonding and …
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Aib(2)oxyntomodulin Peptide Molecular Self-Assembly: Smart Nanostructures Toward Long Acting Formulation for Obesity and Diabetes Type 2
… and mechanical parameters affecting the self-assembly process of Aib2-Oxm free peptides as well as the fundamental physical interactions underpinning self-assembly and controlling stability of their fibrillar structures remained to be resolved. A key element to completing our …
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Molecular Self-Assembly of Methyl and Methoxy Substituted Benzoic Acids on Calcite(10.4) and Non-Equilibrium Structures of C60 on CaF2(111)
… the future development of functional devices. Molecular self-assembly has been recognized as a promising tool in this endeavour, with insulating surfaces being particularly interesting for molecular electronics.<br /> Dynamic atomic force microscopy (AFM) in ultrahigh vacuum provides an …
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Studies in molecular recognition. Part I. Expanded molecular tweezers: Design and synthesis of novel receptors. Part II. Molecular self-assembly: Use of carboxylic acids as self-assembly elements
… approaches, and complexation studies of molecular tweezers possessing spacer units $>$7 A are discussed. A general feature of these approaches is the use of the Friedlander reaction to generate the spacer unit. A tweezer utilizing 2,7-dimethoxyacridine as the chromophore with an …
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Geometric and optical transformations of supramolecular host-guest amphiphiles
Molecular self-assembly has been an area of recent interest due to its application in a variety of important contexts including drug delivery, regenerative medicine, energy applications, and others. Simultaneously, host-guest chemistry provides a robust and powerful mechanism for inducing switching …
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Molecular Crystallization Directed By Nanoparticles And Nanopatterns
… focuses on nanoparticle/nanopattern-induced molecular self-assembly and crystallization. We propose a universal strategy to synthesize organic/inorganic hybrid nanostructures using inorganic nanoparticles and nanoparticle arrays to induce organic crystalline compound nucleation and …
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Design of ultra-robust supramolecular assemblies and their application to water treatment
Molecular self-assembly offers a powerful bottom-up approach to producing small molecule nanostructures with high surface areas, tunable surface chemistries, and pristine internal order. Conventionally, the dynamic nature of these systems has constrained their use to specific cases in primarily …
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Supramolecular Nanostructures as Support Materials for Gold Nanoparticle Catalysts
… solution and intrinsically difficult to modify. Molecular self-assembly provides a novel route to synthesize AuNP support materials, offering precise control over spatial arrangements and tunable surface chemistries. A particularly promising self-assembled molecule is the aramid amphiphile (AA), …
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Simulation informed design of stimuli responsive structures and higher-order assemblies in DNA nanotechnology
… with bottom-up approaches, which exploit molecular self-assembly. Particle interactions are programmed so that intended structures form spontaneously. Bottom-up molecular self-assembly promises affordable large-scale manufacture of nanoscale structures with regularity controlled by …
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Multiscale Insights into Molecular Interfaces: STM Imaging and Ultrafast Laser-Induced Dynamics
… explores the multiscale characterization of molecular self-assembly and ultrafast dynamics at interfaces by integrating high-resolution scanning tunneling microscopy (STM) with advanced spectroscopic and ultrafast laser techniques. Focusing on cyclopentadienyltricarbonylmolybdenum dimer …
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Synthetic and mechanistic studies to expand the scope of alkyne metathesis dynamic covalent chemistry
… applied method for the synthesis of diverse molecular architectures and chemical libraries which are of broad interest in a number of chemical disciplines. As part of the greater subset of molecular self-assembly processes, DCC allows for the assembly of complex molecules from simpler …
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