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Organic Chemistry Commons

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Articles 1 - 12 of 12

Full-Text Articles in Organic Chemistry

Tunable Copper Complexes For Sustainable Photocatalysis, David Kline Nov 2017

Tunable Copper Complexes For Sustainable Photocatalysis, David Kline

Posters-at-the-Capitol

Photoredox catalysis has direct applications in sustainable chemistry and thus an immense impact on our environment. With the ability to harness energy directly from the sun to catalyze useful chemical reactions, photocatalysts can help to eliminate the need for harsh reaction conditions and reduce generation of hazardous chemical waste. Photocatalysts based on Earth-abundant metals such as copper have recently emerged as sustainable alternatives to rare-earth metals including iridium and ruthenium, which are no longer required for many photocatalyzed chemical transformations.


Synthesis Of Healable Organic Semiconductor Through Dioxaborolane Bond, Junchen Liu, William W. Mcnutt, Jianguo Mei Aug 2017

Synthesis Of Healable Organic Semiconductor Through Dioxaborolane Bond, Junchen Liu, William W. Mcnutt, Jianguo Mei

The Summer Undergraduate Research Fellowship (SURF) Symposium

The field of organic semiconductors have gained enormous attention the past few decades. Organic materials offer numerous advantages over their inorganic counterparts. Recently a number of works have demonstrated organic semiconductors with healable properties. We aim to investigate the healable ability of an organic semiconductor by mimicking a vitrimer system through the reversible dioxaborolane bond. Vitrimers are polymers with reversible crosslink system. It has been reported that the use of the borane-oxygen bond as the crosslink showed good mechanical performance. The electrical properties will be inspected for the vitrimer-like polymer. In this report we describe a Diketopyrrolopyrrole base polymer incorporating ...


Substrate Analogs For Characterizing The Substrate Tolerance Of S. Pneumoniae Srta, Orion Banks May 2017

Substrate Analogs For Characterizing The Substrate Tolerance Of S. Pneumoniae Srta, Orion Banks

Graduate Student Symposium

Bacterial sortases have been widely studied for their usefulness in protein modification, however, the variable substrate specificity and activity between homologs of these enzymes is not yet fully characterized. To attempt to further understand sorting signal recognition, we are working towards a substrate bound structure of sortase A from Streptococcus pneumoniae (SrtApneu). This enzyme displays a wide tolerance for alternate amino acids within the canonical LPXTG sorting motif. Our strategy involves a non-cleavable substrate analog that can be docked into the active site, allowing for elucidation of a structure displaying the key contacts that allow the enzyme to recognize ...


An Investigation Of The Kinetics And Equilibrium Chemistry Of Cold-Brew Coffee: Caffeine And Chlorogenic Acid Concentrations As A Function Of Roasting Temperature And Grind Size, Niny Z. Rao, Phd, Megan Fuller, Phd, Nicholas Parenti, Samantha Ryder, Nelly Setchie Tchato Apr 2017

An Investigation Of The Kinetics And Equilibrium Chemistry Of Cold-Brew Coffee: Caffeine And Chlorogenic Acid Concentrations As A Function Of Roasting Temperature And Grind Size, Niny Z. Rao, Phd, Megan Fuller, Phd, Nicholas Parenti, Samantha Ryder, Nelly Setchie Tchato

CSHLA Scholar Day

Abstract:

Recently, both small and large commercial coffee brewers have begun offering cold-brew coffee drinks to customers with the claims that these cold-water extracts contain fewer bitter acids due to brewing conditions (Toddy website, 2016) while still retaining the flavor profile. Dunkin Donuts’ website suggests that the cold-water and long brewing times allow the coffee to reach “... its purest form.” With very little research existent on the chemistry of cold brew coffee consumers are left to the marketing strategies of Starbucks and other companies regarding the contents of cold-brew coffee. This research analyzes the caffeine and chlorogenic acid (3-CGA) content ...


Synthesis Of Cyanine Dyes And Their Use As Duplex Dna Photocleavage Agents, Hector Argueta-Gonzalez Apr 2017

Synthesis Of Cyanine Dyes And Their Use As Duplex Dna Photocleavage Agents, Hector Argueta-Gonzalez

Georgia State Undergraduate Research Conference

No abstract provided.


Synthesis Of 1-Phenyl-3,5-Diaryl-4-Bromopyrazoles, 1-Phenyl-3-T-Butyl-5-Aryl-4-Bromopyrazoles, And 1-Phenyl-3-T-Butyl-5-Aryl-4-Bromoisoxazoles., Keren Antoine, Anne K. Jean, Roseleen Almenord, Sierra A. Fleming, Titilope Akinwe, Paula Garzon, Julio C. Falcon Apr 2017

Synthesis Of 1-Phenyl-3,5-Diaryl-4-Bromopyrazoles, 1-Phenyl-3-T-Butyl-5-Aryl-4-Bromopyrazoles, And 1-Phenyl-3-T-Butyl-5-Aryl-4-Bromoisoxazoles., Keren Antoine, Anne K. Jean, Roseleen Almenord, Sierra A. Fleming, Titilope Akinwe, Paula Garzon, Julio C. Falcon

Georgia State Undergraduate Research Conference

No abstract provided.


Spectrofluorometric Analysis Of Bisphenol-A In Drinking Water Bottles, Jeff Brochetti Apr 2017

Spectrofluorometric Analysis Of Bisphenol-A In Drinking Water Bottles, Jeff Brochetti

Student Scholar Showcase

Spectrofluorometric Analysis of Bisphenol-A in Drinking Water Bottles

Bisphenol-A (BPA) is of environmental concern due to its ability to act as an endocrine disruptor in humans and many other animals. In the food industry, BPA is widely used in the production of plastic bottles and plastic liners in aluminum cans. Over time, trace amounts of BPA can leach from the container and into the contents inside. A new method of testing for trace amount of BPA involved the formation of an inclusion complex with ß-Cyclodextrin. With the formation of the inclusion complex, it becomes much easier to analyze low concentrations ...


Stable Isotope Chemistry In Titan Haze Aerosol, Allison Wold Mar 2017

Stable Isotope Chemistry In Titan Haze Aerosol, Allison Wold

Research in the Capitol

Titan, a moon of Saturn, has a thick atmosphere made up of nitrogen and a few percent methane, with a surface pressure of 1.5x that of Earth. Titan’s atmosphere is believed to be that similar to that of early Earth before the rise of O2. One significant source of information on the history and evolution of the atmosphere is the measurement of stable isotopes of elements in the molecules of major gases such as nitrogen, methane, and higher order hydrocarbons. The fractionation associated with the formation of Titan aerosol analogs are explored in the laboratory as a function ...


One-Pot Dialkylation Of Cycloalkanones And Their Ring-Closing Metathesis To Make Bridged Bicyclic Compounds, Dylan Sacenti, Ashley Yoon, Nathan Behrens Mar 2017

One-Pot Dialkylation Of Cycloalkanones And Their Ring-Closing Metathesis To Make Bridged Bicyclic Compounds, Dylan Sacenti, Ashley Yoon, Nathan Behrens

Seaver College Research And Scholarly Achievement Symposium

No abstract provided.


Could O-Aminoquinones Of Estrogen Metabolites Serve As Platforms For Redox Cycling?, Rachel Miller Mar 2017

Could O-Aminoquinones Of Estrogen Metabolites Serve As Platforms For Redox Cycling?, Rachel Miller

Student Research and Creative Activity Fair

The metabolism of estrogen can lead to the formation of two isomeric o-quinones, estrogen-2,3-quinone (E-2,3-Q) and estrogen-3,4-Q (E-3,4-Q). The more reactive E-3,4-Q is genotoxic and can damage DNA by forming apurinic sites; whereas, E-2,3-Q does not form apurinic sites. Estrogen quinones may also be involved in redox cycling to produce reactive oxygen species (ROS), which is another genotoxic pathway. What is not yet clear, is why E-3,4-Q would undergo redox cycling while the non-carcinogenic E-2,3-Q would not. Nitrogen nucleophiles react with the E-3,4-Q at the 1-position. With DNA bases as the ...


Synthesis Of Small Molecule Anti-Trypanosomal Drugs, Samuel Anderson Mar 2017

Synthesis Of Small Molecule Anti-Trypanosomal Drugs, Samuel Anderson

Student Research and Creative Activity Fair

Demand for novel chemotherapeutic agents that treat Human African Trypanosomaiasis (HAT) persists. A series of compounds sharing a 3,4’diphephyl ether skeleton were prepared for a structure activity relationship (SAR) study evaluating antitrypansomal drug candidates. Trypanocidal assays performed in vitro by the Swiss Tropical and Public Health Institute identified a lead with an IC50 of 1.35 μg/mL analogous to a compound previously made in our laboratory. A slight improvement in activity (10%) was observed when changing the molecular substitution pattern from 4,4’ to 3,3’; however, the result is equivocal. Furthermore, in vitro test results demonstrated ...


Docking Studies Of Isoform-Selectivity Of Phosphatidylinositol 3-Kinase (Pi3k) Inhibitors, Kaitlin Goettsch Mar 2017

Docking Studies Of Isoform-Selectivity Of Phosphatidylinositol 3-Kinase (Pi3k) Inhibitors, Kaitlin Goettsch

Student Research and Creative Activity Fair

Phosphatidylinositol 3-kinases (PI3Ks) and their related pathways are reputed targets for drug-based anticancer therapies. Mutations in PI3K genes, expression, and pathways are frequent among multiple cancer types. Four isoforms of PI3Ks exist: α, β, γ, & δ and studies have identified several ligands for each isoform which are capable of serving as inhibitory therapeutic compounds. However, the biochemical efficacy of these molecules varies and the isoform selectivity is not well understood. In this study, we applied in silico docking methods and free energy calculation methods to estimate the binding of reported PI3K ligands against 5 PI3K structures: PI3Kα (PBD ID: 2RD0 ...