Browsing Dissertations & Theses by Issue Date
Now showing items 41-60 of 246
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Enantiomeric Separations And New Chiral Stationary Phases
(Chemistry & Biochemistry, 2010-03-03)Chirality is an important concern for biological activity because asymmetry dominates biological processes at a molecular level. After nearly thirty years of development, liquid chromatographic separations on chiral ... -
Enantiomeric Separation, Microorganism Studies And Determination Of Binding Constants Using Capillary Electrophoresis
(Chemistry & Biochemistry, 2010-03-03)Enantiomeric separation of three series of compounds, including β-lactams, synthetic amino acids and ruthenium(II) polypyridyl complexes using different modes of capillary electrophoresis are discussed in this dissertation. ... -
Scorpionate Supported And Unsupported Carbonyl And Ethylene Complexes Of Group 11 Metals
(Chemistry & Biochemistry, 2010-03-03)Carbon monoxide (CO) and small olefins represent perhaps the simplest, but most important ligand systems in coordination/organometallic chemistry. Simple carbonyl and ethylene compounds have started to appear in the field ... -
Enantiomeric Chromatographic Separations And Ionic Liquids In Gas Chromatography
(Chemistry & Biochemistry, 2010-07-19)Due to the different therapeutic values of optical isomers, the production of enantiomerically pure drugs is of growing demand in pharmaceutical, biotechnology, and agrochemical industries. Today, gas chromatography (GC) ... -
The Use Of Ionic Liquid Based Salts In Gas Chromatography And Electrospray Ionization Mass Spectrometry
(Chemistry & Biochemistry, 2010-07-19)This dissertation focuses on two uses for Room Temperature Ionic Liquids (RTILs). First, RTILs will be used to produce novel Gas Chromatographic (GC) stationary phases. The use of new phosphonium based RTIL GC columns ... -
Total Synthesis Of Cyclooroidin And Studies Towards Some Oroidin Dimers
(Chemistry & Biochemistry, 2010-07-19)This dissertation consists of two parts. The first part describes the synthesis of northern fragment of nagelamide R and the enantioselective total synthesis of cyclooroidin. The oroidin family of marine natural products ... -
Total Synthesis Of 2-aminoimidazole Alkaloids From Leucetta And Clathrina Sponges
(Chemistry & Biochemistry, 2010-07-19)Sponges of the major class, Calcarea can be found in nearly all marine habitats. Two Calcarea genera, Leucetta and Clathrina have found be rich with 2-aminoimidazole alkaloids. The first alkaloid of these groups was isolated ... -
Elucidation Of The Structure And Recognition Properties Of Antimony(III)-tartrate Using Electrospray Ionization Mass Spectrometry
(Chemistry & Biochemistry, 2010-11-01)Chirality of molecules is a major topic in the design, discovery and development of new drugs. Currently, analytical chemistry research divisions are challenged to find new methods to screen enantiospecific molecular ... -
Nanopore Stochastic Sensing With Ionic Liquid Supporting Electrolyte And Ionic Liquid Based Water Quantitation Using Gas Chromatography
(Chemistry & Biochemistry, 2011-03-03)This dissertation focuses toward finding two new avenues to explore the properties of ionic liquids (ILs). First, ILs has been used as a novel, and advantageous supporting electrolytes in nanopore stochastic sensing ... -
Ionic Liquids In Analytical Chemistry And Calix[4]arene Chemistry Of NOx Gases
(Chemistry & Biochemistry, 2011-03-03)Application of ionic liquids (ILs) in analytical chemistry can be numerous. The use of ILs in analytical techniques including gas chromatography (GC), electrospray ionization mass spectrometry (ESI-MS), capillary electrophoresis ... -
Analytical Characterization Of Anthocyanins From Natural Products By Reverse-phase Liquid Chromatography-photodiode Array-electrospray Ionization-ion Trap-time Of Flight Mass Spectrometry
(Chemistry & Biochemistry, 2011-03-03)Anthocyanins are known to be one of the most powerful phytochemical antioxidant and believed to have a positive influence on a variety of health conditions. Numerous studies continue on these compounds that are readily ... -
Estrogen Analysis By Liquid Chromatography - Mass Spectrometry
(Chemistry & Biochemistry, 2011-03-03)Estrogens are well known as female hormones associated with both health and disease. Although they have been reported as potential carcinogens, their use as therapy in the treatment of neurodegeneration has recently received ... -
Slowing DNA Translocation In A Biological Protein α-hemolysin Ion Channel
(Chemistry & Biochemistry, 2011-07-14)During the past decade, nanopore DNA sequencing has emerged as a revolutionary prospect towards a "$1000 genome" goal set by U.S. National Institute of Health. In the nanopore approach, electrophoretic movement of ... -
Synthesis And Evaluation Of Multicationic Ionic Liquids As Gas Chromatographic Stationary Phases And Synthetic Polymers As Chiral HPLC Stationary Phases
(Chemistry & Biochemistry, 2011-07-14)Due to the characteristics unique to ionic liquids (ILs), they are found in a plethora of applications from simple liquid-liquid extractions to a proposed liquid medium for a lunar telescope. These applications require a ... -
New Macrocyclic Glycopeptide Antibiotic For Chiral HPLC Stationary Phases And Ionic Liquids In Analytical Chemistry
(Chemistry & Biochemistry, 2011-07-14)The main focus of this dissertation is on the development of new chiral stationary phases for HPLC and GC and the application of ionic liquids in analytical chemistry. They will be discussed separately in two parts. ... -
Electrowetting Of Ionic Liquids And Development Of An Electrowetting Based Tunable RC Filter And Its Uses As An Analytical Detector
(Chemistry & Biochemistry, 2011-09-12)Wettability control of a liquid drop by an external electric field or "electrowet- ting" recently was the subject of special interest among researchers due to its util- ity for a variety of applications. Some of these ... -
Capillary Scale Reagent Introduction And Optical Detectors For Capillary Scale Analysis
(Chemistry & Biochemistry, 2011-10-11)Atmospheric aerosols are of great interest as they have the potential to perturb the earth's radiative energy balance, influence the climate, reduce visibility, and adversely affect human health. The composition of atmospheric ... -
A diffusionless transformation path relating Th₃P₄ and spinel structure opportunities to synthesize ceramic materials at high pressures
(Chemistry & Biochemistry, 2012-04-11)Physical properties of solids at high pressure hold the key to many interesting questions in earth and planetary sciences, as well as in applied sciences. At high pressure, most ambient-pressure materials become unstable ... -
Solid State Light Source Based Analytical Measurement Systems For Atmospheric Particles
(Chemistry & Biochemistry, 2012-04-11)Solid-state light sources such as light-emitting diodes, use a solid semiconductor block instead of a conventional heated filament or discharge source. Such light sources are preferred in analytical instrumentation because ... -
New GC Separation Approaches And Analysis Of Antioxidants From Rosemary (Rosmarinus officinalis L.) And Their Stabilities By HPLC
(Chemistry & Biochemistry, 2012-04-11)Enantiomeric separations are of great interest in the pharmaceutical, biotechnology and agrochemical industries due to the different therapeutic effects of enantiomers. Because of the high efficiency, sensitivity and ...