Browsing Chemistry & Biochemistry by Title
Now showing items 323-342 of 553
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N-HETEROAROMATIC ACID ADLAYER STRUCTURES UNDER HYDROGEN BONDING INFLUENCE:
(2007-02-20)In this dissertation, I investigate the adsorption and growth of thin films of N-heteroaromatic acids and related molecules on Ag(111) surface. The N-heteroaromatic acids have ring-nitrogen and carboxylic groups. Hence, ... -
N-METHYL-4-PICOLINIUM ESTERS AS PHOTOREMOVABLE PROTECTING GROUPS BASED ON PHOTOINDUCED ELECTRON TRANSFER
(2005-05-03)The goal of this project is to develop an improved photoremovable protecting group (PRPG) for the carboxylate functionality that can be released using high wavelength light through a photoinduced electron transfer (PET) ... -
N-METHYL-4-PICOLINIUM IODIDE ESTERS AS VISIBLE LIGHT PHOTOREMOVABLE PROTECTING GROUPS FOR CARBOXYLIC ACIDS
(2015)Facile photorelease of carboxylic acids is performed through charge-transfer excitation of N-methyl-4-picolinium iodide esters. Photolysis reactions are carried out under mild, biphasic solvent conditions using a household ... -
NANO STRUCTURED MATERIALS FOR ENERGY APPLICATIONS
(2017)This dissertation addressed the applications of nanostructured materials as oxygen carriers (OCs) and catalysts in poly lactic acid (PLA) thermal decomposition. In chapter 1~4, the stability and cyclibility of metal oxides ... -
Nanofabrication on engineered silicon (100) surfaces using scanning probe microscopy
(2011)Fabricating and measuring sub-5 nanometer features brings to light several pressing issues in future semiconductor industry manufacturing and dimensional metrology. This dissertation presents a feasible process to create ... -
NANOSTRUCTURED MATERIALS FOR SOLAR HYDROGEN GENERATION
(2010)Hydrogen can be considered a nonpolluting and inexhaustible energy carrier for the future. However, hydrogen is not readily available for use as a fuel. It exists in bound form with other elements (e.g. water, hydrocarbons) ... -
NEW CHEMICAL TOOLS TO INVESTIGATE RNA FUNCTIONS
(2013)Ribonucleic acid (RNA), as one of the essential macromolecules of life, plays an active role in gene regulation, catalysis, and signaling because of its ability to adopt complex 3D structures that can exist in multiple ... -
NEW LIGAND MOTIFS FOR PLATINUM-BASED `SHILOV CHEMISTRY' AND DETOURS INTO BASIC ORGANOMETALLIC RESEARCH
(2009)The C-H activation reaction at cationic platinum centers utilizing chelating aromatic N-type ligands has been widely studied in TFE (trifluoroethanol): a weakly coordinating solvent. In our laboratory, recent studies ... -
NEW LIGAND SCAFFOLDS FOR COMBINING ARENE C-H ACTIVATION AND AEROBIC OXIDATION AT PLATINUM
(2018)Extensive research over the past half-century has proven the utility of late transition metal complexes in the activation and functionalization of alkanes and arenes. Homogeneous platinum compounds have been particularly ... -
New molecules to combat the bacterial antibiotic resistance problem
(2011)Platensimycin/platencin are recently discovered natural products that inhibit membrane formation in bacteria and cyclic diguanylic acid (c-di-GMP) is a master regulator of bacterial biofilm formation. The rise of bacterial ... -
New Nanoparticle Characterization Techniques by Differential Mobility Analysis
(2022)Nanoparticles are being used increasingly in new fields for new applications. Thoroughcharacterization of particle properties such as size, aggregation, and mass are key to understanding particle behavior. In this dissertation ... -
A New Role for the CYT-18 N-Terminus and Three-Dimensional DNA Crystals as Vehicles for Biocatalysis
(2014)The bifunctional Neurospora crassa mitochondrial tyrosyl-tRNA synthetase (N. crassa mt TyrRS; CYT-18 protein) promotes the splicing of multiple group I introns by stabilizing the catalytically active intron structures. ... -
New Technologies for Broadband Quantum Key Distribution: Sources, Detectors, and Systems
(2008-11-12)In this thesis I describe three independent projects that advance the development of broadband quantum cryptography. While each project pertains to a different part of the QKD chain, together they provide key developments ... -
NMR studies of polyubiquitin chains: insights into structural basis of functional diversity
(2004-10-25)Signaling by polyubiquitin (polyUb) chains mediates numerous cellular processes. All these processes involve the covalent modification of the substrate protein with a polyubiquitin chain that is itself formed by isopeptide ... -
A NON-INVASIVE ELECTROSTATIC GATING METHOD FOR PROBING TWO-DIMENSIONAL ELECTRON SYSTEMS ON PRISTINE, CHEMICALLY-TERMINATED, INTRINSIC SI SURFACES
(2021)We have demonstrated a new and effective method for the non-invasive electrostatic gating of pristine, chemically-terminated, intrinsic Si surfaces. This was achieved using a silicon-on-insulator (SOI) device design in ... -
NONEQUILIBRIUM MANYBODY DYNAMICS WITH ULTRACOLD ATOMS IN OPTICAL LATTICES AND SELECTED PROBLEMS IN ATOMIC PHYSICS
(2014)This thesis is a collection of three separate projects ordered according to the historical development of atomic physics, covering first spectroscopy, then laser cooling, and finally the exploration of quantum dynamics ... -
Nonlinear Optical Studies of Molecular Adsorption and Solvation at Solid/Liquid and Liquid/Liquid Interfaces
(2011)Interfacial solvation is responsible for promoting biological phenomena in vivo including protein folding, solute transfer across membranes and enzymatic activity. The specific solvation interactions responsible for these ... -
Nor-Seco-Cucurbiturils
(2008-04-22)With rapid growth in molecular recognition and self-assembly in recent years, α−, β−, and γ-cyclodextrins, as a platform for molecular recognition have been widely applied as molecular containers in water. In particular, ... -
NOVEL PLATINUM COMPLEXES SUPPORTED BY SULFONATED CNN PINCER LIGANDS RELEVANT TO AEROBIC METHANE FUNCTIONALIZATION CHEMISTRY
(2021)Mild and selective aerobic methane functionalization has always been a challenge. Shilov developed a PtII based system that has a potential to solve the problem, but the non-practical PtIV oxidant needs to be substituted ... -
A Novel Pre-fluorescent Nitroxide Probe for the Highly Sensitive Determination of Peroxyl and Other Radical Oxidants
(2009)ABSTRACT Peroxyl and other radical oxidants react with stable cyclic nitroxides, such as the piperidinyl and pyrrolidinyl nitroxides to form initially the one electron oxidation product, the oxoammonium cation. For most ...