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Browsing CHEM Graduate Student Conference Papers by Issue Date

Browsing CHEM Graduate Student Conference Papers by Issue Date

Now showing items 21-36 of 36

Design and studies of a self-assembled cofacial zinc phthalocyanine dimer complexed with fullerene(s)

Maligaspe, Eranda; D'Souza, Francis (Wichita State University. Graduate School., 2008-04-25)

Biomimetic bacterial photosynthetic reaction center complexes have been constructed using welldefined self-assembled supramolecular approaches. The “special pair” donor, a cofacial phthalocyanine dimer, was formed via ...
Electropolymerization of Triphenylamine appended Zinc Porphyrin to form Porphyrin-Fullerene dyads at the electrode surface for photochemical studies

Subbaiyan, Navaneetha K.; D'Souza, Francis (Wichita State University. Graduate School, 2009-05-01)

Porphyrins with their attractive chemical properties qualify to seek potential technological applications including solar energy conversion, sensors, catalysts, biomedicine, molecular electronics, and photonics. Many of ...
Molecular triads comprised of boron dipyrrin-C60 Dyad connected to either an energy or electron donating entity to probe sequential energy/electron transfer events.

Wijesinghe, Channa A.; D'Souza, Francis (Wichita State University. Graduate School, 2009-05-01)

In natural photosynthesis two major processes, absorption of light energy by antenna system and transportation of that light energy to the reaction center take place efficiently. There is a growing interest to mimic these ...
Detection and quantification of ketamine HCl in alcohol/water matrices using ESI-MSn and LC-ESI-MS

Lygrisse, Justin; Lapp, Martin; Witherspoon, Kelsey; Van Stipdonk, Michael J. (Wichita State University. Graduate School, 2009-05-01)

Drug facilitated date rape continues to be a problem around the world. Ketamine HCl (KT) has gained popularity since it is nearly odorless, tasteless, and colorless when dissolved in water/alcohol and a typical street dose ...
Comparison of dissociation tendencies of meta- & paratrifluorotolylglycine methyl esters and meta- & paratolylglycine methyl esters in ESI-MS

Kerstetter, Dale R.; Vu, Anthony; Graichen, Adam; Vachet, Richard; Tokunboh, Idia; Van Stipdonk, Michael J. (Wichita State University. Graduate School, 2009-05-01)

Peptide fragmentation is an integral part of an evolving field commonly referred to as proteomics. Understanding of peptide fragmentation is vital to continued proteomic research. The frame work of this study was the ...
Energy transfer followed by electron transfer in a supramolecular Boron Dipyrrin-Zinc Porphyrin-Fullerene

Maligaspe, Eranda; D'Souza, Francis (Wichita State University. Graduate School, 2009-05-01)

Photosynthesis, the process of converting light energy into chemical energy, involves two major steps, absorption and transportation of light energy of appropriate wavelength by the antenna light harvesting molecules to ...
Synthesis of CdTe quantum dots of different sizes and their interactions with water soluble porphyrins

Das, Sushanta K.; D'Souza, Francis (Wichita State University. Graduate School, 2009-05-01)

Progress in the synthesis of CdTe quantum dots through controlled colloidal-thermal processing and understanding of the factors that control the luminescence quantum yields of CdTe quantum dots enable us to discover ...
What does that molecule look like? Using tandem mass spectrometry, computational chemistry and vibrational spectroscopy to determine molecular structure

Dain, Ryan P.; Van Stipdonk, Michael J. (Wichita State University. Graduate School, 2009-05-01)

Scientists wanting to determine the structure of a molecule have many tools at their disposal. Tandem mass spectrometry (MS/MS) allows one to study the fragmentation pathways of molecules, examining how a molecule will ...
Separation of metallic and semi conducting SWNTs by density gradient ultracentrifugation and formation of donor-acceptor hybrids using porphyrins

Das, Sushanta K. (Wichita State University. Graduate School, 2010-04-23)

Occurrence of photo induced electron transfer in donor-acceptor self-assembled Zinc porphyrin (ZnP) and C₀M₀CAT single walled carbon nanotube (SWNT) nanohybrid has been demonstrated. C₀M₀CAT (6,5) and C₀M₀CAT(7,6) SWNT ...
Molecular tetrads comprised of Zinc porphyrin-boron dipyrrin-triphenylamine triad to probe sequential energy/electron transfer events via axial ligation with C₆₀imidazole entity

Wijesinghe, Channa A.; Subbaiyan, Navaneetha K. (Wichita State University. Graduate School, 2010-04-23)

There is a growing interest to mimic major processes in natural photosynthesis via artificial systems in order to harvest solar energy. In the present study, we wish to report newly synthesized molecular triads comprised ...
Biomimetic solar cells

Subbaiyan, Navaneetha K. (Wichita State University. Graduate School, 2010-04-23)

Eco friendly energy resources are becoming important due to the predicted oil depletion and soared CO₂ emission. Of available alternatives, solar energy finds special attention due to its vast availability and high power ...
Synthesis of asymmetrically substituted push-pull phthalocyanines as potential photodynamic therapy agent

Amin, Anu N.; Maligaspe, Eranda (Wichita State University. Graduate School, 2010-04-23)

Over the past decade, photodynamic therapy (PDT) has begun to gain worldwide attention either as a primary or as an alternate treatment for solid cancers.1The success of the treatment largely depends upon the tumor-selectivity ...
Kinetic studies of protein-carbohydrate interactions at the bilayer interface of catanionic vesicles

Islam, Mohammad R. (Wichita State University. Graduate School, 2010-04-23)

In this paper, we describe our work on surface functionalization and modification of catanionic vesicles with an aim toward increasing their range of applications. Conventional vesicles are formed from double-tailed ...
Harvesting solar energy via artificial photosynthesis

Maligaspe, Eranda (Wichita State University. Graduate School, 2010-04-23)

Photosynthesis, the process of converting light energy into chemical energy, involves two major steps, absorption and transportation of light energy of appropriate wavelength by the antenna light harvesting molecules to ...
The preparation of charged anion receptors to bind anionic components of bacterial membranes

Koralegedara, Manjula B. (Wichita State University. Graduate School, 2010-04-23)

A receptor able to selectively bind a phosphatidylglycerol (PPG) head group is an attractive synthetic target as a modular component of an antimicrobial therapeutic. The major challenge to the preparation of such receptors, ...
Comparative binding studies with a tetraurea picket porphyrin receptor using ¹H NMR and isothermal titration calorimetry

Aw, Hong W. (Wichita State University. Graduate School, 2010-04-23)

The (α, α, α, α)-5,10,15,20-tetrakis(2-(4-fluorophenylurea)phenyl)porphyrin binds strongly (K(M⁻¹)>10⁴) to chloride anion, and close to 2-3 orders of magnitude less to acetate anion, in DMSO-d₆ as revealed by ¹H NMR titration ...