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Search Publications by: Edwin J. Heilweil (Assoc)

Displaying 126 - 150 of 261

Ultrafast Chelation Dynamics of Model Photoswitches: Arene Chromium Tricarbonyl Derivatives With Pendant Sulfides

May 25, 2007

Author(s)

Tung T. To, Charles Duke, T J. Burkey, Edwin J. Heilweil

The chelation dynamics of three new [Cr{?6-C6H5C(O)R}(CO)3] complexes 1 (R = CH2(SCH3)), 2 (R = CH(SCH3)2), and 3 (R = C(SCH3)3) in room temperature heptane, THF, and acetonitrile solutions have been investigated on the picosecond to millisecond timescale

Terahertz Spectroscopy of Dicyanobenzenes: Anomalous Absorption Intensities and Spectral Calculations

May 24, 2007

Author(s)

Okan Esenturk, Ari Evans, Edwin J. Heilweil

Terahertz (THz) absorption spectra of the three isomeric structures of dicyanobenzene obtained from chloroform solutions and the solid phase at 298 K are reported. These spectra exhibit enhanced absorption cross-sections over those measured for most

The Use of Apertures to Create Discrete Combinatorial Libraries Using Pulsed Laser Deposition

May 18, 2007

Author(s)

Nabil Bassim, Peter K. Schenck, Eugene Donev, Edwin J. Heilweil, Eric J. Cockayne, Martin L. Green, Leonard Feldman

In Pulsed-Laser Deposition (PLD), there are many processing parameters that influence film properties which may be studied such as substrate-target distance, background reactive gas pressure, laser energy, substrate temperature and composition in multi

Applications of THz Spectroscopy in Biosystems

January 1, 2007

Author(s)

David F. Plusquellic, Karen M. Siegrist, Edwin J. Heilweil, Okan Esenturk

Process Analytical Technology (PAT): Effects of Instrumental and Compositional Variables on Terahertz Spectral Data Quality to Characterize Pharmaceutical Materials and Tablets

January 1, 2007

Author(s)

H Wu, Edwin J. Heilweil, A S. Hussain, M A. Khan

Process Analytical Technology (PAT): Quantification Approaches in Terahertz Spectroscopy for Pharmaceutical Application

January 1, 2007

Author(s)

H Wu, Edwin J. Heilweil, A S. Hussain

Ultrafast Chelation Dynamics of a Manganese Tricarbonyl Derivative in Solid Polyacrylonitrile

January 1, 2007

Author(s)

Tung T. To, Edwin J. Heilweil

Time-Resolved Infrared Absorption Study of Cyclopentadienyl Manganese Tricarbonyl Derivatives With Pendant Sulfides in Acetonitrile

July 18, 2006

Author(s)

Tung T. To, Edwin J. Heilweil, T J. Burkey

The chelation dynamics of [5-C5H4C(O)R]Mn(CO)3 complexes 1 (R = CH2(SCH3)3), 2 (R = CH(SCH3)2), and 3 (R = C(SCH3)3) in room temperature acetonitrile solution have been investigated on the picosecond timescale by UV-pump IR-probe transient absorption

Terahertz Spectroscopy of Solid Serine and Cysteine

November 10, 2005

Author(s)

Timothy M. Korter, M B. Campbell, M C. Beard, Edwin J. Heilweil

Terahertz (THz) absorption spectra of the amino acids L-serine and L-cysteine in teh solid phase at 77K and 298 K are reported and compared to vibrational spectral results from Density Functional Theory for these species.

Measurement Process Prospects using THz Spectroscopy for Pharmaceutical Applications

January 1, 2005

Author(s)

M A. Khan, Edwin J. Heilweil, A S. Hussain, H Wu

Ultrafast Transient THz Spectroscopy of Azobenzene

January 1, 2005

Author(s)

Okan Esenturk, Edwin J. Heilweil

Using Terahertz Spectroscopy to Quantify Pharmaceutical Tablet Composition

January 1, 2005

Author(s)

M A. Khan, H Wu, Edwin J. Heilweil, A S. Hussain

Comparative OHD-RIKES and THz-TDS Probes of Ultrafast Structural Dynamics in Molecular Liquids

October 1, 2004

Author(s)

M C. Beard, W T. Lotshaw, Timothy M. Korter, Edwin J. Heilweil, D McMorrow

We compare terahertz time-domain (THz-TDS) and optical heterodyne detected Raman-induced Kerr effect (OHD-RIKES) spectroscopic techniques as probes of molecular and vibrational dynamics in the frequency range 0.1 THz to 6 THz (3 cm-1 to 200 cm-1). The