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 745 for “"Functionalization"”.
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Noncovalent Functionalization Of Graphene
… reach greater monolayer densities. Noncovalent functionalization also allows assembled functionality to behave dynamically on the surface, afeature not observed in conventional self assembled monolayers. In addition, while biomacromolecuels adsorbed on bare graphene can lose their function, …
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Upcycling of Polyolefins Through Functionalization
… to a circular economy. Post-use modification (or functionalization) has shown promising results in upcycling polyolefins, removing limitations of inertness, and potentially improving the final physical properties of the recycled material while extending its useful lifetime. Specifically, the …
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Surface functionalization of graphene devices
… applications in electronic devices. Chemical functionalization on its surface promises a powerful tool to manipulate its electronic properties and modify its atomic structures. Graphene is a true two-dimensional material; every carbon atom in single layer graphene is exposed to its …
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Chemical functionalization of AFM cantilevers
Atomic force microscopy (AFM) has been a powerful instrument that provides nanoscale imaging of surface features, mainly of rigid metal or ceramic surfaces that can be insulators as well as conductors. Since it has been demonstrated that AFM could be used in aqueous environment such as in water or …
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Desymmetrilizing Organic Molecules via Structural Functionalization
Desymmetrization is defined as the conversion of symmetric structures into non-symmetric ones under convenient reactions conditions; it can lead to asymmetric synthesis of chiral products that attracted much attention in research labs and pharmaceutical industry. Particularly, those associated with …
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Functionalization of PS-b-P4VP Nanotemplates
Self-organization of block copolymers becomes attractive for several branches of the current science and technology, which requires a cheap way of fabrication of well-ordered arrays of various nanoobjects. High ratio between the surface (or the interface) and the volume of the nanoobjects enables …
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Functionalization of nanoclays through exchange reactions
A cationic clay (sodium-montmorillonite, MMT) and an anionic clay (hydrotalcite, HT) were treated with two phosphonium based ionic liquids (ILs) and a commercial corrosion inhibitor. Clay modification was examined by TGA, FTLR and WXRD. The cationic clay modified with both ILs had similar thermal …
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Bioorthogonal Functionalization of Elastin-like Polypeptides
… introduce unique chemical reactivity for further functionalization with desired moieties or chemical transformation. </p><p>We have used this technology to develop novel therapeutic and material platforms comprised of a unique biopolymer, elastin-like polypeptide (ELP). This thermally responsive …
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Functionalization and applications of carbon nanotubes
Carbon nanotubes (CNTs) possess a unique set of electrical and mechanical properties and have been used in a variety of applications. In this thesis, we explore strategies to functionalize CNTs as well as applications which are enabled by functionalized CNTs. Chapter 1 gives an overview of emerging …
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Selective functionalization of azines via phosphonium salts
Pyridines and diazines are ubiquitous in pharmaceuticals, agrochemicals, and materials. Therefore, methods to functionalize these structural motifs are increasingly valuable. We have shown that phosphonium salts can be formed on a range of azines, including complex biologicallyactive compounds. …
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Chemical functionalization and modification of Au clusters
… unchanged during the synthesis and after the functionalization reaction which suggests the high stability of these particles. The functionalization of the ligand was confirmed by Proton Nuclear Magnetic Resonance Spectroscopy (1H NMR) and the NC size was characterized by TEM. In the second …
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Surface Chemical Functionalization based on Plasma Techniques
… chemical conventional methods, used for surface functionalization, involve in some cases the use of toxic liquid reagents thus environment detrimental; for this reason they are progressively being replaced by other techniques, in particular by plasma surface modification processes. …
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Gold-catalyzed synthesis and functionalization of heteroarenes
… from the study of gold-catalyzed synthesis or functionalization reactions or heteroarenes. The work is presented in four different chapters. The first chapter summarizes the most representative reactivity trends in the field of gold catalysis and serves as general introduction. The second …
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Plasmonic Nanoshells: Synthesis, Functionalization, and Photonic Applications
… presented in this dissertation focuses on the functionalization and application of hollow gold-silver nanoshells (GS-NSs). GS-NSs were chosen for this research because of their unique surface plasmon resonance properties, allowing for these nanostructures to be designed to absorb light at …
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Arenophile-mediated dearomative functionalization of unactivated arenes
Two photomediated dearomative methods are reported using an “arenophile” called MTAD. Arene-arenophile cycloadducts are formed by irradiation of mixtures of unactivated arenes and MTAD at cryogenic temperatures with visible light. These cycloadducts are subsequently used as substrates in …
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Functionalization of CNFET arrays for chemical sensing
… frameworks (cMOFs) and metal nanoparticles. Our functionalization approach enhances sensor responses by up to two orders of magnitude and enables on-chip pattern generation. Furthermore, the large number of redundant sensors allows for statistically significant measurements. The improved …
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Anisotropic surface functionalization and applications of upconversion nanoparticles
… practically useful, their surfaces require functionalization with active chemical groups that target important specific biomolecular and cellular structures within the body. Current literature assumes UCNPs are spherical in shape and that isotropic surface modification strategies such as …
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IMPLANT MATERIAL FUNCTIONALIZATION TO ENHANCE BIOACTIVITY IN ORTHOPAEDICS
Musculoskeletal disease is one of the leading causes of long term physical disability. One of the key challenges in bone healing and regeneration is the engineering of an implant that incorporates osseointegration to meet the metabolic demands of recovery. Although implants are typically expected …
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