Physical Sciences and Mathematics Commons^™

Infrared Cross-Sections And Integrated Band Intensities Of Propylene: Temperature-Dependent Studies, Et-Touhami Es-Sebbar, Majed Alrefae, Aamir Farooq

Dr. Et-touhami Es-sebbar

Propylene, a by-product of biomass burning, thermal cracking of hydrocarbons and incomplete combustion of fossil fuels, is a ubiquitous molecule found in the environment and atmosphere. Accurate infrared (IR) cross-sections and integrated band intensities of propylene are essential for quantitative measurements and atmospheric modeling. We measured absolute IR cross-sections of propylene using Fourier Transform Infrared (FTIR) Spectroscopy over the wavenumber range of 400–6500 cm−1 and at gas temperatures between 296 and 460 K. We recorded these spectra at spectral resolutions ranging from 0.08 to 0.5 cm−1 and measured the integrated band intensities for a number of vibrational bands in certain …

Xena: An Automated 'Open-Source' 129xe Hyperpolarizer For Clinical Use, Panayiotis Nikolaou, Aaron M. Coffey, Laura L. Walkup, Brogan M. Gust, Nicholas Whiting, Hayley Newton, Iga Muradyan, Mikayel Dabaghyan, Kaili Ranta, Gregory D. Moroz, Matthew S. Rosen, Samuel Patz, Michael J. Barlow, Eduard Y. Chekmenev, Boyd M. Goodson

Nicholas Whiting

Stereoselective Synthesis Of 3,7-Diarylaminocholestanes By Titanium-Mediated Reductive Amination, Md Wasi Ahmad, Hong Seok Kim

Dr. Mohammad Wasi Ahmad (Md Wasi Ahmad)

An efficient method for the synthesis of aryl aminocholestanes, using a chlorotriisopropoxytitanium (IV)-mediated reductive amination reaction of 5a-cholestane-3,7-dione, is reported. A series of 3, 7-diarylaminocholestane derivatives were prepared according to this methodology in up to 98% yield. These compounds were primarily characterized by 1H NMR, 13C NMR, and mass spectrometry.

Selective Fluorescence Sensing Of Salicylic Acid Using A Simple Pyrene Appended Imidazole Receptor, Md Wasi Ahmad, Bo Yeon Kim, Hong Seok Kim

Dr. Mohammad Wasi Ahmad (Md Wasi Ahmad)

A simple salicylic acid selective fluorescence receptor 1 was designed by combining 1-pyrenecarboxaldehyde and 1-(3-aminopropyl)imidazole. The selective sensing of salicylic acid resulted in a significant increase in monomer emissions due to the p–p interactions between the benzene and pyrene rings. The nature of the interactions between receptor 1 and salicylic acid was investigated further by 1H NMR spectroscopy, and the energy minimised structure of the complex between receptor 1 and salicylic acid was optimised. Receptor 1 showed the highest binding constant with 5-nitrosalicylic acid among all the aromatic carboxylic acids tested. 5-Nitrosalicylic acid formed a complex with receptor 1 at …

Bovine Serum Albumin (Bsa) And Cleaved-Bsa Conjugated Ultrasmallgd2o3nanoparticles: Synthesis, Characterization, And Application To Mri Contrast Agents, Md Wasi Ahmad, Cho Rong Kim, Jong Su Baeck, Yongmin Chang, Tae Jeong Kim, Ji Eun Bae, Kwon Seok Chae, Gang Ho Lee

Dr. Mohammad Wasi Ahmad (Md Wasi Ahmad)

No abstract provided.

Fluctuations In Transient Response Of Adsorption-Based Plasmonic Sensors, Zeljko D. Cupic

Zeljko D Cupic

The basic parameters of a sensor element defining its ultimate performance are sensitivity and intrinsic noise. In plasmonic gas sensors both are determined by refractive index changes due to adsorption and desorption (a–d) of target analyte particles to the sensor active area. In this paper we present a general model that can be simultaneously used to determine sensitivity and intrinsic noise of a plasmonic sensor both during transients and in steady-state and is valid for multi-analyte environments. The model utilizes the conventional probabilistic approach. It is derived without any assumptions about the stochastic nature of the fundamental (a–d) process. It …

Intrinsic Delocalization During The Decay Of Excitons In Polymeric Solar Cells, Thomas F. George, W. Chen, D. Jiang, R. Chen, S. Li

Thomas George

Bis(2-Nitrophenyl)Methane, Daron E. Janzen, Laura E. Crepeau, Benjamin D. Hageseth, James W. Wollack

Daron E Janzen, Ph.D.

No abstract provided.

Crystal Structures Of Bis[2-(Diphenylphosphinothioyl) Phenyl] Ether And Bis{2-[Diphenyl(Selanylidene)- Phosphanyl]Phenyl} Ether, Daron E. Janzen, Arianna M. Kooyman, Kayla A. Lange

Daron E Janzen, Ph.D.

No abstract provided.

1-Phenyl­Piperazine-1,4-Diium Tetra­Chlorido­Cobalt(Ii), Abdelhamid C. Dhieb, Daron E. Janzen, Mohamed Rzaigui, Wajda S. Sta

Daron E Janzen, Ph.D.

No abstract provided.

Crystal Structures Of 2,6-Bis[(1h-1,2,4-Triazol-1-Yl)- Methyl]Pyridine And 1,1-[Pyridine-2,6-Diylbis- (Methylene)]Bis(4-Methyl-1h-1,2,4-Triazol-4-Ium) Iodide Triiodide, Marites A. Guino-O, Matthew J. Folstad, Daron E. Janzen

Daron E Janzen, Ph.D.

No abstract provided.

Trichlorido(1-Ethylpiperazin-1-Ium)-Cobalt(Ii), Abdelhamid C. Dhieb, Daron E. Janzen, Mohamed Rzaigui, Wajda S. Sta

Daron E Janzen, Ph.D.

No abstract provided.

Standoff Methods For The Detection Of Threat Agents: A Review Of Several Promising Laser-Based Techniques, J. Bruce Johnson, Susan D. Allen, Jonathan Merten, Lewis Johnson, Daniel Pinkham, Scott Reeve

Scott Reeve

No abstract provided.