Chemistry: Recent submissions
Now showing items 1-20 of 837
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Pyrene Excimer Formation: A Tool to Study Macromolecular Conformations in Solution
(University of Waterloo, 2024-04-26)The current view for fluorescence collisional quenching (FCQ) experiments is that no quantitative information can be retrieved from macromolecules containing more than a single dye-quencher pair attached at two specific ... -
Development and biomedical applications of solid phase micro-extraction (bio-SPME) chemical biopsy devices
(University of Waterloo, 2024-02-22)Micro-sampling is a vital component in modern diagnostics and personalized medicine. In vivo SPME is a novel branch of biomedical applications of SPME (Bio-SPME) that offers unique advantages complementary to existing ... -
Controlling Exciton Polarization in Transition Metal Doped Indium Oxide Nanocrystals
(University of Waterloo, 2024-02-20)The simultaneous manipulation of electronic charge and spin in dilute magnetic semiconductors (DMSs) doped with transition metal ions has been long considered a holy grail for advancing spintronics and quantum information ... -
Development and Application of a Consumable-Free Modulator for Comprehensive Two-Dimensional Gas Chromatography
(University of Waterloo, 2024-02-16)Comprehensive two-dimensional gas chromatography (GC×GC), is a separation method recognized as offering far greater peak capacity than conventional one-dimensional separations. Today, the most frequently used GC×GC systems ... -
Low-Dimensional Nanostructured Catalysts of Copper Oxides and Nickel Oxides Supported on Graphene and Their Applications in Biosensing and Photoelectrochemical Hydrogen Evolution
(University of Waterloo, 2024-01-22)Cuprous oxide (Cu2O) nanomaterials provide a versatile platform for building non-enzymatic glucose sensors. In particular, Cu2O nanocubes with controllable sizes and distributions can be deposited electrochemically on a ... -
Size-Specific ZrO₂ and HfₓZr₁₋ₓO₂ Nanoclusters and Their Magnetic and Nanodevice Applications
(University of Waterloo, 2024-01-22)Nanoclusters, generally defined as assemblies of a discrete number of atoms or molecules in the size range of 1-10 nm, have attracted a lot of attention due to their unique properties that bridge the gap between isolated ... -
Advanced Electrolyte Design for Long-Life and High-Areal-Capacity Divalent Metal Batteries
(University of Waterloo, 2024-01-22)Net-zero carbon dioxide emission demands clean renewable energy, while harnessing it requires electrochemical storage devices with high energy density, safety and affordability. To achieve decarbonization, much effort is ... -
Oxygen Reduction Reaction on Doped Lanthanum Chromate Perovskites
(University of Waterloo, 2024-01-19)The oxygen reduction reaction (ORR) plays a pivotal role in fuel cell technology and the generation of clean oxidizing agents. This reaction can proceed via two distinct pathways. The complete ORR pathway involves reducing ... -
Facilitating the Formation of Intermetallic Compounds in Al-Si Coatings on Steel during Hot Stamping
(University of Waterloo, 2023-12-14)Hot-stamped ultrahigh strength steel (UHSS) components are pivotal to automotive light-weighting. Steel blanks, often coated with an aluminum-silicon (Al-Si) layer to protect them from oxidation and decarburization, are ... -
Hydride Generation as a Sample Introduction Technique for Detection of Arsenic by Microplasma
(University of Waterloo, 2023-12-08)Microplasma can be used as a portable analytical instrument for elemental analysis of samples due to their small size, low power consumption, low carrier gas consumption, and low cost. This is specifically important for ... -
Investigation of Crystal Structures and Ultra-Low Thermal Conductivities in Novel Group 14 and 15 Chalcogenides
(University of Waterloo, 2023-12-04)The crystal structures and physical properties of several new group 14 and 15 chalcogenides are discussed in this thesis. The thesis discusses the chalcoantimonates TlLa2Sb3Se9 and La12+zSb9-ySe38-z (simplified as La12Sb9Se38). ... -
Controlled nanometer liquid layer thicknesses for the study of nanomaterials and biospecimens in liquid-cell transmission electron microscopy
(University of Waterloo, 2023-09-22)Liquid-cell transmission electron microscopy (LC-TEM) is an in-situ microscopy technique which aims to image nanomaterials and biospecimens in their native liquid phase environment. To accomplish this task, miniature vessels ... -
Investigation of the Electronic Structure and Magnetic Properties of CeO2-X
(University of Waterloo, 2023-09-19)In literature, it has been reported that undoped CeO2 exhibits a room-temperature ferromagnetic-like ordering that does not follow Curie-type behaviour, typically found in magnetic materials. However, none of the proposed ... -
Towards Understanding Differential Ion Mobility and its Applications for Analytical and Medicinal Chemistry
(University of Waterloo, 2023-08-30)This PhD thesis, titled “Towards Understanding Differential Ion Mobility Spectrometry and its Applications in Analytical and Medicinal Chemistry,” encompasses a broad effort to understand the principles that underpin ... -
Improving Biospecimen Imaging in Liquid Phase Electron Microscopy
(University of Waterloo, 2023-08-24)This thesis highlights the progress made in LPEM and the study of biosamples. The introduction provides a comprehensive overview of the challenges encountered in investigating molecular processes and traces the historical ... -
Selection and characterization of an aptamer to a thiazole orange derivative for use in a fluorescence-based biosensor
(University of Waterloo, 2023-08-18)Aptamers are short single-stranded DNA or RNA sequences that have been selected in vitro to have a high binding affinity to a specific target molecule. One class of aptamers can bind to small non-fluorescent molecules to ... -
Electroorganic CO₂ Fixation Via Paired Electrolysis and Nanoscale Electrocatalysis
(University of Waterloo, 2023-08-17)Sustainable energy driven electroorganic synthesis provides a green and inexpensive alternative to traditional synthetic approaches. For instance, the electroreduction of many classes of organic molecules enables the ... -
Biochemical Characterization and Optimization of RNA Aptamers Bound to Hoechst Dye Derivatives
(University of Waterloo, 2023-08-09)Ribonucleic acid (RNA) aptamers are single-stranded nucleic acids that are typically selected through a process known as Systematic Evolution of Ligands by EXponential Enrichment (SELEX). These oligonucleotides can bind ... -
Solid Solution Tetrelides and Pnictides for Thermoelectric Applications
(University of Waterloo, 2023-07-17)Recent major advancements in thermoelectric material performance center around the development and understanding of band structure engineering techniques and phonon scattering mechanisms. Solid solution materials have the ... -
Defect Investigation on Hematite Photoanodes
(University of Waterloo, 2023-05-17)Efforts to improve the efficiency of photoelectrocatalytic reactions on hematite photoanodes routinely focus on the analysis of photophysics, or on the fabrication of complex material architectures. The discontinuity of ...