UScholar Works
 
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251 - 275 of 338
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CreatorTitleDescriptionSubjectDate
251 Voth, Gregory Alan; Ayton, Gary S.Role of protein interactions in defining HIV-1 viral capsid shape and stability: a coarse-grained analysisCoarse-grained models of the HIV-1 CA dimer are constructed based on all-atom molecular dynamics simulations. Coarse-grained representations of the capsid shell, which is composed of approximately 1,500 copies of CA proteins, are constructed and their stability is examined. A key interaction between...Virus capsid; HIV-1; Viral capsid shape; Coarse-graining; CA dimer2010-01
252 Miller, Joel StevenRoom temperature molecular/organic-based magnetThe Du Pont / Ohio State University research team made materials in the laboratory, then tested them for magnetism. To do so, they initially moved a magnet along the outside of a sealed tube containing a small blob of experimental material and an inert gas such as argon or nitrogen. "We've done it...Bis(benzene)vanadium; Vanadium; Tetracyanoethylene; TCNE; Polymeric magnets; Room temperature1991
253 Morse, Michael DavidRotational analysis of the 30 1 band of the Ã6Σ+ ← X̃6Σ + system of CrCCHThe spectrum of chromium acetylide, CrCCH, has been investigated in the near-infrared region (10 500-14 500 cm−1) and an intense band system is observed. The 310 band of this system has been investigated at high resolution (0.025 cm−1) and this system is identified as the ˜A6 + ← ˜X6 + syste...2014-01-01
254 Morse, Michael DavidRotationally resolved spectra of jet-cooled RuSiWe report the first gas-phase spectroscopic investigation of diatomic ruthenium silicide (RuSi). The molecules were produced by laser ablation of a Ru disk into a flow of helium carrier gas containing 0.5% SiH4, and were cooled in a supersonic expansion. The RuSi molecules were then studied using re...2007
255 Morse, Michael DavidRotationally resolved spectra of jet-cooled VMoThe Author's report the first gas-phase spectroscopic investigation of diatomic vanadium molybdenum (VMo). The molecules were produced by laser ablation of a VMo alloy disk and cooled in a helium supersonic expansion. The jet-cooled VMo molecules were studied using resonant two-photon ionization sp...2007
256 Morse, Michael DavidRotationally resolved spectra of Pt?High-resolution laser-induced fluorescence spectroscopy has been used to investigate the 18 163 cm21 band of Pt2 in a supersonically cooled molecular beam. Rotational constants of the ground and excited states were extracted from the rotationally resolved spectrum and determined to be B0'=0.031 754(...2002
257 Morse, Michael DavidRotationally resolved spectroscopy of jet-cooled NbMoRotationally resolved resonant two-photon ionization spectra of jet-cooled NbMo are reported for the first time. A vibronic spectrum of NbMo was recorded in the 17 300?22 300 cm?1 spectral region. Although the observed bands could not be grouped into electronic band systems, four excited vibronic le...2007
258 Morse, Michael DavidRydberg and pulsed field ionization-zero electron kinetic energy spectra of YOA spectroscopic study of the Rydberg states of YO accessed from particular rotational levels of the A 2II1/2, v=0 state has been combined with a pulsed field ionization, zero electron kinetic energy (PFI-ZEKE) investigation. The results provide accurate values of the ionization energy of YO, ioniz...1999
259 Armentrout, Peter B.; Morse, Michael DavidRydberg and pulsed field ionization-zero electron kinetic energy spectra of YOA spectroscopic study of the Rydberg states of YO accessed from particular rotational levels of the A²Π½, v=0 state has been combined with a pulsed field ionization, zero electron kinetic energy (PFI-ZEKE) investigation. The results provide accurate values of the ionization energy of YO, ionizati...Ionization energy; Rydberg spectra; Yttrium monoxide1999
260 Olson, Randall J.; Coldwell, Karin D.; Compton, Bruce J.; Giddings, John C.Sedimentation field-flow fractionation: a method for studying particulates in cataractous lensIt is shown that the technique of sedimentation field-flow fractionation (sedimentation [sed] FFF) can be used to determine the particle content and particle size distribution of normal and cataractous lenses. A 31-year-old normal human lens, for example, showed a particle content of 1.5% by weight ...Fractionation; Cataractous Lens; Particulates1984
261 Stang, Peter J.Self-assembly of coordinative supramolecular polygons with open binding sitesThe design and synthesis of coordinative supramolecular polygons with open binding sites is described. Coordination-driven self-assembly of 2,6-bis(pyridin-4-ylethynyl)pyridine with 60? and 120? organoplatinum acceptors results in quantitative formation of a supramolecular rhomboid and hexagon, resp...2010
262 Stang, Peter J.Self-selected formation of single discrete supramolecules with flexible, bidentate ligands in the coordination-driven self-assemblyFlexible donor ligands like 1,2-bis(3-pyridyl)ethyne or 1,4-bis(3-pyridyl)-1,3-butadiyne selfassemble into discrete 2-D supramolecules instead of infinite networks upon combination with organoplatinum 90, 120, and 180 degree acceptor units. These systems are unique examples of versatile pyridine...Bidentate ligands; Flexible donor ligands; Supramolecules; Coordination-driven self-assembly2008
263 Armentrout, Peter B.Sequential bond energies and barrier heights for the water loss and charge separation dissociation pathways of Cd2+(H2O)n, n 3-11The bond dissociation energies for losing one water from Cd2+(H2O)n complexes, n=3?11, are measured using threshold collision-induced dissociation in a guided ion beam tandem mass spectrometer coupled with a thermal electrospray ionization source. Kinetic energy dependent cross sections are obtained...2011
264 Armentrout, Peter B.The simplest b 2 + ion: determining its structure from its energetics by a direct comparison of the threshold collision-induced dissociation of protonated oxazolone and diketopiperazineEnergy-resolved collision-induced dissociation of b2 + ions derived from protonated GGG and GAG are compared with that of protonated diketopiperazine (H+DKP). Absolute dissociation cross sections are obtained using a guided ion beam tandem mass spectrometer and analyzed using statistical methods. T...2012
265 Armentrout, Peter B.The simplest b2+ ion: determining its structure from its energetics by a direct comparison of the threshold collision-induced dissociation of protonated oxazolone and diketopiperazineEnergy-resolved collision-induced dissociation of b2 + ions derived from protonated GGG and GAG are compared with that of protonated diketopiperazine (H+DKP). Absolute dissociation cross sections are obtained using a guided ion beam tandem mass spectrometer and analyzed using statistical methods. Th...2012-01-01
266 Miller, Joel Steven; Epstein, Arthur J.Solitons in nearly commensurate organic charge transfer crystalsX-ray diffuse scattering, magnetic, and conductivity studies of (N-methylphenazinium)x (phenazine)1-x (tetracyanoquinodimethan) [(NMPx(Phen)1-x (TCNQ)] show the formation of defect states for 0.50≤x≤0.54. These results are in agreement with the formation of solitons in a highly correlated quasi-...Charge-transfer salts1983
267 Miller, Joel Steven; Epstein, Arthur J.Specific heat of decamethylferrocenium tetracyanoethanide (DMeFc)(TCNE)We report the specific heat C(T) of (DMeFc)(TCNE) for temperatures 3 K < T < 50 K. We observe an anomaly at Tc-4.82 K corresponding to a transition to a three-dimensional (3D) macroscopic ferromagnet. A broad maximum at = 15 K corresponds to an exchange interaction of J = 35 K along the chain axis. ...Temperature; Ferromagnetic; Magnetic1989
268 Morse, Michael DavidSpectroscopic analysis of jet-cooled AICuDiatomic AlCu has been interrogated using resonant two-photon ionization spectroscopy in a supersonic expansion of helium. The ground state is shown to be X l?+, deriving from the 3&3dgd configuration, in agreement with theoretical predictions. The closed-shell nature of this molecule results in a l...1993
269 Morse, Michael DavidSpectroscopic analysis of the open 3 d subshell transition metal aluminides: AIV, AICr, and AICoThree open 3d subshell transition metal aluminides, AlV, AICr, and AlCo, have been investigated by resonant two-photon ionization spectroscopy to elucidate the chemical bonding in these diatomic molecules. The open nature of the 3d subshell results in a vast number of excited electronic states in th...1994
270 Morse, Michael DavidSpectroscopic studies of jet-cooled AgAu and Au?Resonant two-photon ionization spectroscopy has been applied to the jet-cooled Au? and AgAu molecules. Three new band systems of Au? and two new systems of the poorly characterized AgAu molecule have been observed. Excited state lifetime measurements have been made, and assignments of the excited s...1991
271 Morse, Michael DavidSpectroscopic studies of jet-cooled AINiResonant two-photon ionization spectroscopy has been used to interrogate diatomic AlNi produced by laser vaporization of a 1:l alloy target in a supersonic molecular beam of helium. Although a large density of states in this molecule prohibits a concise elucidation of its electronic structure, the p...1993
272 Morse, Michael DavidSpectroscopic studies of jet-cooled CuAgResonant two-photon ionization spectroscopy has been applied to jet-cooled diatomic CuAg. Four band systems have been observed, three of which have been rotationally resolved and analyzed. The ground state is X ??+ in symmetry, deriving from the 3d??cu4d??Ag?? molecular configuration. Its bond lengt...1991
273 Morse, Michael DavidSpectroscopic studies of the jet-cooled aluminum trimerGas phase spectroscopic investigations of the jet-cooled aluminum trimer are reported using the technique of resonant two-photon ionization with mass spectrometric detection. A discrete band system in the 5200-6100 ? region is observed, consisting of an extended vibrational progression in a single ...1987
274 Morse, Michael DavidSpectroscopy and electronic structure of jet-cooled Al?Resonant two-photon ionization spectroscopy has been used to study the jet-cooled Al? molecule. The ground state has been conclusively demonstrated to be of 3IIu symmetry, deriving from the ???rr?u electronic configuration. High resolution studies have established the bond length of the X?IIu state ...1990
275 Morse, Michael DavidSpectroscopy and electronic structure of jet-cooled GaAsAn optical spectrum, obtained by resonant two-photon ionization spectroscopy, is reported for jet-cooled diatomic gallium arsenide. The ground state is identified as X??-, deriving from a ??rr? molecular configuration, and is characterized by ?" = 215 cm-1, ?"exe" = 3 cm-1, and r0' = 2.53 ? 0.02 ?. ...1989
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