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

Physical Sciences and Mathematics Commons

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

Articles 1 - 30 of 39

Full-Text Articles in Physical Sciences and Mathematics

Charge Transport Properties Of Bo-Chelated Azadipyrromethenes, Tingrui Ma, Muyuan Zhao, Geneviève Sauvé Dec 2012

Charge Transport Properties Of Bo-Chelated Azadipyrromethenes, Tingrui Ma, Muyuan Zhao, Geneviève Sauvé

Intersections Fall 2020

Intramolecular BO-chelated azadipyrromethenes are promising organic semiconductors. Here, we evaluated the electron and hole mobility of a series of BO-chelated azadipyrromethenes using the Space Charge Limited Current(SCLC) method. In order to determine the mobility of the material, Mott Gurney's law was applied using the film thickness and slope of the J1/2 versus voltage plot in the SCLC graph. The best electron mobility observed for BO-chelated materials is 4.64—10-6 cm2V-1s-1 and the best hole mobility is 7.38—10-4 cm2V-1s-1. These results suggest that BO-chelated materials are promising p-type semiconductors for electronic applications.


Height And Light: Optical Profilometry Characterization For Conservation Of Abraded Plastics, Sarah Lavin Dec 2012

Height And Light: Optical Profilometry Characterization For Conservation Of Abraded Plastics, Sarah Lavin

Intersections Fall 2020

This project aims to understand how surface polishing affects different materials in the context of art conservation. These materials include both those used in the creation and preservation of art objects, and those used to house and display them in a museum. Conservators at SBE Conservation and Cooper Hewitt have been working on two series of art objects, Still Life #46 and Still Life #54 by Tom Wesselman, for the past 6 years. The two sculptures are identical with the difference being that those from the Still Life #46 series were backlit while the others were not. Working with conservators …


Is The Fluorescence Quantum Yield Of Tryptophan Independent Of Excitation Wavelength?, Nadia Abbass, Luis A. Ortiz-Rodríguez, Carlos E. Crespo-Hernández Dec 2012

Is The Fluorescence Quantum Yield Of Tryptophan Independent Of Excitation Wavelength?, Nadia Abbass, Luis A. Ortiz-Rodríguez, Carlos E. Crespo-Hernández

Intersections Fall 2020

Tryptophan is a fluorescent amino acid that is commonly used as a probe in protein structure-dynamics studies. It is also widely used as a convenient standard for measurements of fluorescence quantum yields of organic and bioorganic molecules. Literature values of the fluorescence quantum yield range from 0.13 to 0.15 upon excitation of tryptophan at 270 nm in aqueous solution. Even though the fluorescence quantum yield of tryptophan is known with a high degree of accuracy upon excitation at 270 nm (i.e., ca. ± 0.02), this value is being used indiscriminately in the literature for the determination of the fluorescence quantum …


Remarkable Sensitivity Of The Prospective Photodynamic Therapy Agent 6-Selenoguanine To Ph, Collin Merrick, Sean J. Hoehn, Luis A. Ortiz-Rodríguez, Sarah Krul, Carlos E. Crespo-Hernández Dec 2012

Remarkable Sensitivity Of The Prospective Photodynamic Therapy Agent 6-Selenoguanine To Ph, Collin Merrick, Sean J. Hoehn, Luis A. Ortiz-Rodríguez, Sarah Krul, Carlos E. Crespo-Hernández

Intersections Fall 2020

The photophysical properties of the canonical DNA/RNA nucleobases can be modified by selective functionalization. The carbonyl functional group at the C6 position of guanine or 2-amino-6-oxopurine, for example, can be removed to form 2-aminopurine, thus replacing the ultrafast internal conversion pathway to the ground state observed in guanine with slow internal conversion and intersystem crossing pathways in 2-aminopurine.1 Similarly, substitution of the carbonyl oxygen in guanine with a heavier atom results in a redshift of the absorption spectrum and a remarkable modulation of the electronic relaxation pathways of the DNA nucleobase. More specifically, sulfur substitution redshifts the absorption spectrum of …


Derivatization Of Free Glycans For Glycan Sensor And Glyco-Functionalization Applications, Rhonda D. Jones Sep 2012

Derivatization Of Free Glycans For Glycan Sensor And Glyco-Functionalization Applications, Rhonda D. Jones

Undergraduate Research Posters 2012

Glycans, especially, cell surface glycans acting as receptors, are involved in a wide range of biological processes. Analysis of the cell surface glycans provides a basis for understanding the molecular mechanism of glycan-mediated biological process. The present method can be applied in derivatizing sugars from natural sources for glycan sensor and glyco-functionalization applications.


Differential Protein Expression In Polystichum Acrostichoides Due To Metal Exposure, Paul Alexander Ilkanich, Pratheek C. Koneru Sep 2012

Differential Protein Expression In Polystichum Acrostichoides Due To Metal Exposure, Paul Alexander Ilkanich, Pratheek C. Koneru

Undergraduate Research Posters 2012

Plants are considered the most cost effective and environmentally sound way to clean up the soils and water contaminated with toxic metals. We focused our studies on the fern species Polystichum acrostichoides. A total of 17 protein spots were up regulated and 3 proteins were down regulated upon various metal exposures, and are arranged to be subjected to liquid chromatography-tandem mass spectrometry for further identification.


Synthesis And Characterization Of Chain-End Functionalization Of Glycosaminoglycans, Nikola Paulic, Jacob J. Weingart Sep 2012

Synthesis And Characterization Of Chain-End Functionalization Of Glycosaminoglycans, Nikola Paulic, Jacob J. Weingart

Undergraduate Research Posters 2012

This presentation reports the CSU Summer Undergraduate Research project, which is the synthesis and characterization of chain-end functionalized CS derivatives, which will be used to investigate various bio-orthogonal conjugation reactions in attempt to create a novel CS-rTM conjugate.


Effects Of Ions On The Activity Of Peptidyl-Trna Hydrolase, Blake Holloway Jan 2012

Effects Of Ions On The Activity Of Peptidyl-Trna Hydrolase, Blake Holloway

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Composition And Antimicrobial Activity Of The Essential Oil Of Hyssopus Seravschanicus Growing Wild In Tajikistan, Rachel M. Thompson, Prabodh Satyal Jan 2012

Composition And Antimicrobial Activity Of The Essential Oil Of Hyssopus Seravschanicus Growing Wild In Tajikistan, Rachel M. Thompson, Prabodh Satyal

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Determination Of Copper In Aqueous Solutions By Chelation With Diethyldithiocarbamate, Caitlin Allison Jan 2012

Determination Of Copper In Aqueous Solutions By Chelation With Diethyldithiocarbamate, Caitlin Allison

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Natural Antiparasitic Coumarins: An In Silico Study, William R. Erwin Jan 2012

Natural Antiparasitic Coumarins: An In Silico Study, William R. Erwin

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


A Chemical Ecological Investigation Of The Allelophatic Potential Of Lamium Amplexcaule And Lamiun Purpureum, Chelsea D. Jones, Katherine E. Woods Jan 2012

A Chemical Ecological Investigation Of The Allelophatic Potential Of Lamium Amplexcaule And Lamiun Purpureum, Chelsea D. Jones, Katherine E. Woods

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Measuring Antioxidant Properties Through Frap, Xanthine Oxidase, And Orac Assays, Christina Lee Jan 2012

Measuring Antioxidant Properties Through Frap, Xanthine Oxidase, And Orac Assays, Christina Lee

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Analysis Of Critical Point Phenomena In Binary Liquid Systems, Carl Pattison Jan 2012

Analysis Of Critical Point Phenomena In Binary Liquid Systems, Carl Pattison

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


"The Study Of Natural Products For Drug Discovery Is A Vital Field In Pharmaceutical Research…", Leah E. Woodall Jan 2012

"The Study Of Natural Products For Drug Discovery Is A Vital Field In Pharmaceutical Research…", Leah E. Woodall

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.


Why Do We Collect?, Allison Marsh Jan 2012

Why Do We Collect?, Allison Marsh

Section 2: Imaging the Microscopic

No abstract provided.


Imaging And Aesthetics, Allison Marsh Jan 2012

Imaging And Aesthetics, Allison Marsh

Section 2: Imaging the Microscopic

No abstract provided.


A Crossword Puzzle For Kids, Allison Marsh Jan 2012

A Crossword Puzzle For Kids, Allison Marsh

Handouts

No abstract provided.


An Exhibit Wordle, Allison Marsh Jan 2012

An Exhibit Wordle, Allison Marsh

Handouts

No abstract provided.


Word Find, Allison Marsh Jan 2012

Word Find, Allison Marsh

Handouts

No abstract provided.


Lesson Plans, Activities, And Further Reading, Allison Marsh Jan 2012

Lesson Plans, Activities, And Further Reading, Allison Marsh

Handouts

No abstract provided.


Images From The Exhibit, Page 2, Allison Marsh Jan 2012

Images From The Exhibit, Page 2, Allison Marsh

Handouts

No abstract provided.


Images From The Exhibit, Page 1, Allison Marsh Jan 2012

Images From The Exhibit, Page 1, Allison Marsh

Handouts

No abstract provided.


Capturing Motion, Allison Marsh Jan 2012

Capturing Motion, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Understanding Fracture, Allison Marsh Jan 2012

Understanding Fracture, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Listen, Allison Marsh Jan 2012

Listen, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Photographic Evidence, Allison Marsh Jan 2012

Photographic Evidence, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Spotlight On Usc: Mechanical Engineering, Allison Marsh Jan 2012

Spotlight On Usc: Mechanical Engineering, Allison Marsh

Section 3: Imaging the Fast Moving

No abstract provided.


Usc Image Center, Allison Marsh Jan 2012

Usc Image Center, Allison Marsh

Section 1: Introduction

No abstract provided.


Powers Of Ten, Allison Marsh Jan 2012

Powers Of Ten, Allison Marsh

Section 1: Introduction

No abstract provided.