Browsing Chemistry by Title
Now showing items 212-231 of 839
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Development of Needle Trap Devices for Particle Entrapment
(University of Waterloo, 2022-05-25)The importance of studying particle-bound components in aerosol samples has been highlighted during the COVID-19 pandemic, when people tried to stop the spread of droplet-bound viruses by wearing face masks. While the ... -
Development of Needle Trap Technology for On-Site Determinations: Active and Passive Sampling
(American Chemical Society, 2014-05-19)This study presents a thorough evaluation of new prototypes of extended tip needle trap devices (NT), as well as their application to in situ sampling of biological emissions and active/passive on-site sampling of indoor ... -
Development of Needle Trap Technology for On-Site Determinations: Active and Passive Sampling
(ACS, 2014)This study presents a thorough evaluation of new prototypes of extended tip needle trap devices (NT), as well as their application to in situ sampling of biological emissions and active/passive on-site sampling of indoor ... -
Development of New Carbon-Carbon Bond-Forming Strategies: Formation and Reactivity of sp³-gem-Organodimetallic Palladium(II)/MRn Alkane Intermediates (MRn=Dialkylalumino, Trialkylstannyl)
(University of Waterloo, 2006-12-01)Investigation of the catalytic formation, reactivity and synthetic scope of sp³-gem-organodimetallic palladio(II)/main group metal (main group metal = tributylstannyl, dialkylalumino) alkane species has been carried out. ... -
Development of New Domino Reactions of Alkylidene Meldrum’s Acids Involving Friedel-Crafts Chemistry and Catalytic Conjugate Allylation of Alkylidene Meldrum’s Acids
(University of Waterloo, 2009-10-02)Alkylidene Meldrum’s acids are very reactive acceptors in conjugate additions, and are known to be significantly more electrophilic than other α,β-unsaturated carbonyl electrophiles. They also offer advantages in terms of ... -
Development of novel spme coatings and high-throughput automation of sample preparation for pharmaceutical and clinical samples
(University of Waterloo, 2009-12-23)Increasing the efficiency of the methods used through the development and trial of novel pharmaceutical compounds is an important step to reduce the time required to develop new medical treatments. Before a drug can be ... -
Development of Solid Phase Microextraction Methodologies for the Determination of Anthropogenic Contaminants from Fatty Food Matrices
(University of Waterloo, 2019-09-03)Anthropogenic contaminants have been on the rise worldwide due to global industrialization. The world is now faced with the consequences of the pollution caused by the exposure of man-made chemicals in the environment. ... -
Development of the Aprotic Lithium-Oxygen Battery System
(University of Waterloo, 2015-11-10)With the increasing importance of electrified transport, the need for high energy density storage is also increasing. Possible candidates include Li-O2 batteries, which are the subject of rapidly increasing focus worldwide ... -
Development of the Synthesis of Thiophene and Thiazole Based Conjugated Polymers Through Direct Arylation and The Separation of Carbon Nanotubes Using Degradable Conjugated Polymers
(University of Waterloo, 2023-01-30)Conjugated polymers are an ever-growing field due to their ability to be used for a variety of purposes such as photovoltaics, field-effect transistors, light emitting diodes, and organic sensors. To further this field, ... -
Development, Validation, Uptake Rate Modeling and Field Applications of a New Permeation Passive Sampler
(University of Waterloo, 2009-12-15)Passive air sampling techniques are an attractive alternative to active air sampling because of the lower costs, simple deployment and retrieval methods, minimum training requirements, no need for power sources, etc.. ... -
Developments and applications of solid phase microextraction (SPME) coupled to direct analysis in real time (DART) and approaches towards small volume analysis
(University of Waterloo, 2019-08-21)Solid phase microextraction (SPME) has been rapidly developing since its invention in 1990. Due to a flexible design and the ability to implement various extractive coatings, SPME has found use in numerous applications. ... -
Developments in the Centroid Phase Space Formulation of Quantum Statistical Mechanics
(University of Waterloo, 2016-01-25)The centroid formalism provides a phase space representation of quantum statistical mechanics based on the Feynman path integral. Real time quantum correlation functions can be exactly calculated using the centroid formalism, ... -
DiPyMe in SDS Micelles: Artifacts and Their Implications in the Interpretation of Micellar Properties
(American Chemical Society, 2015-11-10)This study provides experimental evidence that di(1-pyrenylmethyl) ether or DiPyMe, a well-known fluorescent probe employed to determine the microviscosity of surfactant or polymeric micelles, is being hydrolyzed in the ... -
Direct coupling of solid phase microextraction with electrospray ionization mass spectrometry: A Case study for detection of ketamine in urine
(Elsevier, 2019-10-10)Electrospray ionization mass spectrometry (ESI-MS) is a commonly used technique for analysis of various samples. Solid phase microextraction (SPME) is a simple and efficient technique that combines both sampling and sample ... -
Direct Fitting of Analytical Potential Functions to Diatomic Molecular Spectroscopic Data
(University of Waterloo, 2000)The standard practice of spectroscopic data reduction is generally to fit data to level energy expansions in terms of the vibrational and rotational quantum numbers. However, the utility of such expressions is limited ... -
Direct immersion solid-phase microextraction analysis of multi-class contaminants in edible seaweeds by gas chromatography-mass spectrometry
(Elsevier, 2018-11-15)The present work aimed at the development of a simple and accurate direct immersion-solidphase microextraction-gas-chromatography-mass spectrometry (DI-SPME-GC-MS) method for simultaneous determination of PAHs, PCBs, and ... -
Dissecting Colloidal Stabilization Factors in Crowded Polymer Solutions by Forming Self-Assembled Monolayers on Gold Nanoparticles
(American Chemical Society, 2013-05-21)An ideal colloidal system should be highly stable in a diverse range of buffer conditions while still retaining its surface accessibility. We recently reported that dispersing citrate-capped gold nanoparticles (AuNPs) in ... -
Dissecting the effect of anions on Hg2+ detection using a FRET based DNA probe
(Royal Society of Chemistry, 2012-08-07)Many biosensors have been developed to detect Hg2+ using thymine-rich DNA. While sensor response to various cations is often studied to demonstrate selectivity, the effect of anions has been largely overlooked. Anions may ... -
Dissociation and Degradation of Thiol-Modified DNA on Gold Nanoparticles in Aqueous and Organic Solvents
(American Chemical Society, 2011-05-17)Gold nanoparticles functionalized with thiol-modified DNA have been widely used in making various nanostructures, colorimetric biosensors, and drug delivery vehicles. Over the past 15 years, significant progress has been ... -
Distinction of Individual Lanthanide Ions with a DNAzyme Beacon Array
(American Chemical Society, 2016-06-24)Developing chemical probes to distinguish each lanthanide ion is a long-standing challenge. Aside from its analytical applications, solving this problem will also enhance our knowledge in metal ligand design. Using in vitro ...