Open Access. Powered by Scholars. Published by Universities.®

Chemistry Commons

Open Access. Powered by Scholars. Published by Universities.®

28,037 Full-Text Articles 43,364 Authors 7,435,070 Downloads 287 Institutions

All Articles in Chemistry

Faceted Search

28,037 full-text articles. Page 6 of 792.

Synthesis Of Halogenated Glyoximes, Nickie Tiwari 2021 University of Mississippi

Synthesis Of Halogenated Glyoximes, Nickie Tiwari

Honors Theses

Dr. Huang is a chemical engineering professor at the University of Alabama. He is interested in using alpha-Halogenated glyoximes to better understand impurity incorporation of organic additives. Various alpha-Halogenated glyoximes are being synthesized for his study. In this project, bromodimethylglyoxime is being synthesized. This is a two-step reaction. The first reaction converts diacetlymonoxime to bromodimethylglyoxalmonoxime through bromination. The product is then reacted with hydroxylammonium chloride to form bromodimethylglyoxime. Ultimately, there has been success in forming bromodimethylglyoxalmonoxime. For this reaction, solvent ratios of methanol must be proportional to literature values. However, there have been difficulties in converting bromomonoxime to bromodimethylglyoxime. There ...


Surface Functionalization Of Elastomers For Tunable Crystal Growth And Smart Adhesives, John Kapitan 2021 University of Nebraska-Lincoln

Surface Functionalization Of Elastomers For Tunable Crystal Growth And Smart Adhesives, John Kapitan

Student Research Projects, Dissertations, and Theses - Chemistry Department

Silicone rubbers have seen extensive work on modulation of their surface environments for use in microfluidics, cell adhesion, and sensing. Most surface procedures utilize a common initial step of oxidation of the surface to increase the number of active surface functional groups. Following oxidation more permanent functionalities can be imparted on the surface using silanization, grafting polymer brushes, or creating ionic bonds to the surface. Of these three, silanization proves to be the most pervasive due to the range of procedures available and how easy the procedures prove to be. However, the mechanism by which silanization is performed heavily involves ...


The Interconnectivity Of Parkinson's Disease And Type Two Diabetes Mellitus, Erica Olfson 2021 Belmont University

The Interconnectivity Of Parkinson's Disease And Type Two Diabetes Mellitus, Erica Olfson

Honors Theses

This thesis is about the biochemical connection between Parkinson's disease and Type II Diabetes Mellitus.


Suppressing Bias Stress Degradation In High Performance Solution Processed Organic Transistors Operating In Air, Hamna F. Iqbal, Qianxiang Ai, Karl J. Thorley, Hu Chen, Iain McCulloch, Chad Risko, John E. Anthony, Oana D. Jurchescu 2021 Wake Forest University

Suppressing Bias Stress Degradation In High Performance Solution Processed Organic Transistors Operating In Air, Hamna F. Iqbal, Qianxiang Ai, Karl J. Thorley, Hu Chen, Iain Mcculloch, Chad Risko, John E. Anthony, Oana D. Jurchescu

Chemistry Faculty Publications

Solution processed organic field effect transistors can become ubiquitous in flexible optoelectronics. While progress in material and device design has been astonishing, low environmental and operational stabilities remain longstanding problems obstructing their immediate deployment in real world applications. Here, we introduce a strategy to identify the most probable and severe degradation pathways in organic transistors and then implement a method to eliminate the main sources of instabilities. Real time monitoring of the energetic distribution and transformation of electronic trap states during device operation, in conjunction with simulations, revealed the nature of traps responsible for performance degradation. With this information, we ...


Fluorogenic Probes For Thioredoxin Reductase Activity, Tendai J. Mafireyi, Jorge O. Escobedo, Robert Strongin 2021 Portland State University

Fluorogenic Probes For Thioredoxin Reductase Activity, Tendai J. Mafireyi, Jorge O. Escobedo, Robert Strongin

Chemistry Faculty Publications and Presentations

The thioredoxin system is vital in maintaining the cellular redox state and is implicated in various cancers and other diseases. It comprises of thioredoxin reductase, thioredoxin and NADPH. Various methods have been developed for the detection and quantification of the thioredoxin reductase enzyme. Most of these methods suffer the shortfall of poor specificity, hence there is need to develop more robust and specific techniques. Recently, there has been an increased interest in fluorescent probes that can target thioredoxin reductase. This review highlights the progress in the synthesis and application of the different fluorescent probes that have been employed for this ...


Direct Detection Of 5-Mev Protons By Flexible Organic Thin-Film Devices, Ilaria Fratelli, Andrea Ciavatti, Enrico Zanazzi, Laura Basiricò, Massimo Chiari, Laura Fabbri, John E. Anthony, Alberto Quaranta, Beatrice Fraboni 2021 University of Bologna, Italy

Direct Detection Of 5-Mev Protons By Flexible Organic Thin-Film Devices, Ilaria Fratelli, Andrea Ciavatti, Enrico Zanazzi, Laura Basiricò, Massimo Chiari, Laura Fabbri, John E. Anthony, Alberto Quaranta, Beatrice Fraboni

Chemistry Faculty Publications

The direct detection of 5-MeV protons by flexible organic detectors based on thin films is here demonstrated. The organic devices act as a solid-state detector, in which the energy released by the protons within the active layer of the sensor is converted into an electrical current. These sensors can quantitatively and reliably measure the dose of protons impinging on the sensor both in real time and in integration mode. This study shows how to detect and exploit the energy absorbed both by the organic semiconducting layer and by the plastic substrate, allowing to extrapolate information on the present and past ...


Inhibiting Nitroso Related Methylation Of Guanine Using Dietary Supplements And Flavonoids, Madeline McCoy, James Davis, Chloe Rippey, Stephen Hobson 2021 Liberty University

Inhibiting Nitroso Related Methylation Of Guanine Using Dietary Supplements And Flavonoids, Madeline Mccoy, James Davis, Chloe Rippey, Stephen Hobson

Liberty University Research Week

Undergraduate

Basic


Raising Global Awareness And Internationality In The Undergraduate Organic Chemistry Laboratory, Marissa Scilley, Michael R. Korn 2021 Liberty University

Raising Global Awareness And Internationality In The Undergraduate Organic Chemistry Laboratory, Marissa Scilley, Michael R. Korn

Liberty University Research Week

Undergraduate

Applied


Acid Catalyzed Small Ring Alcohols And Alkenes: An Artistic Approach To Visualizing Relationships Between Features Produced By Uv-Visible Spectra, Madeleine Ware 2021 Southern Adventist University

Acid Catalyzed Small Ring Alcohols And Alkenes: An Artistic Approach To Visualizing Relationships Between Features Produced By Uv-Visible Spectra, Madeleine Ware

Campus Research Day

Madeleine Ware

Research Description

Campus Research Day

My physical organic chemistry research was supervised by Dr. Mitch Menzmer who studies the formation of carbocation intermediates in acid-catalyzed reactions of alkylated and non-alkylated small ring alcohols. The goal of my work was to compile data and develop methods to search for relationships between the initial structures of molecules analyzed and the wavelengths of maximum absorbance for features observed within a given spectrum. In addition, my advisor from the School of Visual Art and Design, Associate Professor Marc Boyson, contributed to this process by providing insights about the way information could be ...


Pueraria Montana Peroxidase Activity, Kathryn Briley, Gregory Raner 2021 Liberty University

Pueraria Montana Peroxidase Activity, Kathryn Briley, Gregory Raner

Liberty University Research Week

Undergraduate

Basic


Anion Removal By Partially Positive Adsorbents, Breanna Dragseth, Matt DeSmith, Emily Robinson, Abi Bartlett 2021 University of Minnesota - Morris

Anion Removal By Partially Positive Adsorbents, Breanna Dragseth, Matt Desmith, Emily Robinson, Abi Bartlett

Undergraduate Research Symposium 2021

Nitrates and phosphates exist naturally but are present in elevated concentrations in many areas primarily due to agriculture; these elevated concentrations are concerning for human and environmental health. The project considered the ability of four different materials used for adsorption (adsorbents) to adsorb nitrate and phosphate. All adsorbents had a silica base with an amine (NH2) group and were further functionalized with different ligands consisting of an aromatic ring functionalized with electron withdrawing groups, creating a partial positive environment to help attract the anions of interest. We also synthesized control materials to determine how effective our engineered materials are. The ...


Synthesis Of Transfer Hydrogenation Catalysts Containing Unsymmetrical Bisphosphines, Nora Fritz 2021 University of Minnesota - Morris

Synthesis Of Transfer Hydrogenation Catalysts Containing Unsymmetrical Bisphosphines, Nora Fritz

Undergraduate Research Symposium 2021

Asymmetric catalysis, where a metal catalyst is used to transform a substrate into a single enantiomer of product, has become a popular synthetic technique in both academic and industrial settings. An enantiomer is a single molecule with a unique three-dimensional shape with a mirror image not superimposable on the original. The chirality, or right or left-handedness, of compounds lead to applications important in the pharmaceutical and agrochemical industries. Commonly, a metal complex’s ability to create a product of a certain enantiomer relies on a chiral group being attached to the metal. However, having the chirality of a metal complex ...


Co2 Capturing Materials, Isaac Sanchez 2021 University of Minnesota - Morris

Co2 Capturing Materials, Isaac Sanchez

Undergraduate Research Symposium 2021

Greenhouse gas emissions are one of, if not the major cause of global warming. With CO2 emissions rising annually, it is paramount to selectively capture and remove CO2 from flue gas. One method of capturing CO2 gas is via porous materials. Covalent organic frameworks (COFs) are porous materials which have been explored throughout this research. Two important features of COFs are the base unit linkage types (BULTs) and the functional groups attached to the organic linkers (OLs). The BULT used in this research was a covalent triazine framework (CTF) and the main functional group used in the ...


Preparation Of Perylene Bisimide Acceptors With Ethylcarboxyl And Pyrenylcyclohexyl Imide Groups, Michael Cashen Stark 2021 University of Mississippi Department of Chemistry

Preparation Of Perylene Bisimide Acceptors With Ethylcarboxyl And Pyrenylcyclohexyl Imide Groups, Michael Cashen Stark

Honors Theses

Multiple attempts were made to deprotect TBDMS-protected (tert-butyldimethylsilyl protected) serinol and swallowtailed PBI (Compound 2), synthesized by past researcher Tarrah Frederick, to generate Compound 1. The theoretical Compound 1 product is intended for use in molecular rectification of electricity because the perylene core acts as a good acceptor with high electron affinity, and it does not require an electron donor group. Many rectification molecules are amphiphilic Donor-σ-Acceptor compounds, which allow for electron transfer through localized molecular orbitals when placed between electrodes (Langmuir-Blodgett Method). However, PBIs can transfer electrons from one electrode, through the LUMO of perylene, and to the other ...


Comparison Of Methods For Measuring Cation Exchange Capacity In Clays, Sarah Glaesemann 2021 Stephen F Austin State University

Comparison Of Methods For Measuring Cation Exchange Capacity In Clays, Sarah Glaesemann

Undergraduate Research Conference

No abstract provided.


Study Of Potential Drug For Alzheimer’S Disease: Small Organic Molecules, 1,5-Dhn And Tmpyp Inhibit Amyloid-Β Peptide Aggregation And Quench Hydroxyl Radicals, Matthew Murphy 2021 Stephen F Austin State University

Study Of Potential Drug For Alzheimer’S Disease: Small Organic Molecules, 1,5-Dhn And Tmpyp Inhibit Amyloid-Β Peptide Aggregation And Quench Hydroxyl Radicals, Matthew Murphy

Undergraduate Research Conference

Alzheimer disease (AD) is recognized as the six leading cause of the death in the United States. As of now, there is no cure for this fatal disease. The current treatment methods can only temporarily slow the worsening of symptoms. Research data suggested that an excess generation of hydroxyl radical in the brain causing the aggregation of Amyloid-β (Aβ) peptide which is considered to be responsible for Alzheimer's disease. Thus, there is a pressing need to find a suitable drug which can quench hydroxyl radicals effectively and stop or slow down the formation of aggregation of Aβ peptide. The ...


A Novel Molecular And Cellular Study On Curcumin, Khang Nguyen 2021 Stephen F Austin State University

A Novel Molecular And Cellular Study On Curcumin, Khang Nguyen

Undergraduate Research Conference

Since the discovery of G-quartet (G4)by M. Gellertin 1962, much attention has been given on G4and C4(also called i-motif) as important drug design targets for the treatment of various human disorders. G4 forming sequences are prevalent in human genome, which includes many important regions of the eukaryotic genome, such as telomere ends, regulatory regions of many oncogenes c-kit, proto-oncogene c-myc, Kirsten rat sarcoma viral oncogene homolog (KRas). Curcumin(diferuloylmethane), an antiinflammatory and antioxidant compound, is found in the rhizomes of the plant Curcuma longa. The phytopolyphenolic chemical curcumin has been in the prominence due to its diverse pharmacological ...


Biotransformation Of Hbe And Other Benzofuran Derivatives, Hannah Trauger 2021 Stephen F Austin State University

Biotransformation Of Hbe And Other Benzofuran Derivatives, Hannah Trauger

Undergraduate Research Conference

No abstract provided.


Synthesis Of Phosphindolizine, Tyler Bell 2021 Southern Adventist University

Synthesis Of Phosphindolizine, Tyler Bell

Campus Research Day

Synthesis of Phosphindolizine which hasn't been done before.


Synthesis Of Some Rhenium-Pyridazyl Complexes For Future Use In Semiconductive Materials, Zachariah Hutcheon, Jonathan Nelson, Philip Temple, Mark Villers, Chad Snyder 2021 Liberty University

Synthesis Of Some Rhenium-Pyridazyl Complexes For Future Use In Semiconductive Materials, Zachariah Hutcheon, Jonathan Nelson, Philip Temple, Mark Villers, Chad Snyder

Liberty University Research Week

Undergraduate

Basic


Digital Commons powered by bepress