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A Theory of Intervalence Band Stark Effects
urea aggregation temperature effect orientational distribution
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2016/5/24
The response of an intervalence band to an applied electric field, called an intervalence band Stark effect, is considered in detail. Because the application of an electric field to a symmetric mixed-...
Intervalence Band Stark Effect of the Special Pair Radical Cation in Bacterial Photosynthetic Reaction Centers
alloys low index single crystal surfaces low energy electron diffraction (LEED) scanning tunneling microscopy X-ray standing waves surface relaxation and reconstruction tin copper
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2016/5/24
The Stark spectrum of the intervalence band of the special pair radical cation in bacterial photosynthetic reaction centers is presented. This spectrum, centered at 2600 cm-1, is modeled using a gener...
Origins of the Sensitivity of Molecular Vibrations to Electric Fields:Carbonyl and Nitrosyl Stretches in Model Compounds and Proteins
phosphoenolpyruvate carboxylase thermostable limited proteolysis flexible loop main chain connectivity
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2016/5/24
The vibrational Stark effect (VSE) is the effect of an electric field on the vibrational spectrum. Typically, the largest change induced by an electric field is the linear frequency shift whose sensit...
Vibrational Stark Effects of Nitriles II. Physical Origins of Stark Effects from Experiment and Perturbation Models
platinum titania catalyst flame synthesis one-step oxidation screening
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2016/5/23
Vibrational Stark effects, which are the effects of electric fields on vibrational spectra, were measured previously for the C−N stretch mode of several small nitriles, yielding difference dipol...
Electrophoresis of DNA Adsorbed to a Cationic Supported Bilayer
hydrogen absorbing materials rare earth alloys gas-solid reactions order-disorder effects neutron diffraction
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2016/5/23
We report fluorescence microscopy studies of the electrophoresis of individual DNA molecules electrostatically adsorbed to a cationic supported lipid bilayer. Obstacles to uniform electrophoretic flow...
Lateral Reorganization of Fluid Lipid Membranes in Response to the Electric Field Produced by a Buried Charge
Thuja dolabrata var. hondai cell culture beta-thujaplicin hinokitiol semi-continuous culture system
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2016/5/23
A thermodynamic model describing multicomponent fluid membranes under the influence of lateral forces due to a buried charge is developed to estimate the magnitude and dynamics of field-induced latera...
Probing Excited State Electron Transfer by Resonance Stark Spectroscopy.II.Theory and Application
Excited State Electron Resonance Stark Spectroscopy Theory Application
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2016/5/23
A theory of the resonance Stark effect data reported in part 1 (preceding paper in this issue) is developed. The model used involves a weak charge resonance interaction between the excited state of an...
Probing Excited State Electron Transfer by Resonance Stark Spectroscopy.I.Experimental Results for Photosynthetic Reaction Centers
adatoms bismuth photoelectron diffraction silicon
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2016/5/23
Higher order Stark spectroscopy has recently been introduced and applied to characterize the electrooptic properties of chromophores in bacterial photosynthetic reaction centers.1 In the course of the...
Effective Charger Transfer Distances in Mixed-Valence Transition Metal Complexes
Charger Transfer Distances Mixed-Valence Transition Metal Complexes
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2016/5/23
Stark (electroabsorption) spectroscopy can provide quantitative information on the change in dipole moment and polarizability for an electronic transition. In the case of mixed-valence transitions, th...
Stark Spectroscopy:Applications in Chemistry,Biology and Materials Science
electroabsorption electrochromism electro-optic absorption electric field charge transfer
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2016/5/23
Stark spectroscopy has been applied to a wide range of molecular systems and materials. A generally useful method for obtaining electronic and vibrational Stark spectra that does not require sophistic...
Dielectric Asymmetry in the Photosynthetic Reaction Center
Dielectric Asymmetry Photosynthetic Reaction Center
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2016/5/23
Although the three-dimensional structure of the bacterial photosynthetic reaction center (RC) reveals a high level of structural symmetry, with two nearly equivalent potential electron transfer pathwa...
Temperature Dependence of the Electric Field Modulation of Electron-Transfer Rates:Charge Recombination in Photosynthetic Reaction Centers
solar energy inorganic, organic, physical and analytical chemistry photosynthesis reaction kinetics electric fields electron transfer entropy experimental data free energy mathematical models
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2016/5/23
The rates of electron-transfer reactions can be systematically varied by application of external electric fields. The electric field effect on the charge recombination rate constant of the state P[sup...
Distance Dependence of Electron-Transfer Reactions in Organized Systems:The Role of Superexchange and Non-Condon Effects in Photosynthetic Reaction Centers
Distance Dependence Electron-Transfer Reactions Organized Systems Superexchange Non-Condon Photosynthetic Reaction Centers
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2016/5/23
Extremely long distance electron transfer is observed in some photosynthetic reaction centers. For several charge recombination reactions, the rate appears to fall off much more slowly with distance t...
Stark Effect Spectroscopy of Carotenoids in Reaction Center and Antenna Complexes from Photosynthetic Bacteria
Stark effect Electric field effect Carotenoid Carotenoid bandshift
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2016/5/23
The effects of electric fields on the absorption spectra of the carotenoids spheroidene and spheroidenone in photosynthetic antenna and reaction center complexes (wild-type and several mutants) from p...
Effects of Buried Ionizable Amino Acids on the Reduction Potential of Recombinant Myoglobin
Buried Ionizable Amino Acids Reduction Potential Recombinant Myoglobin
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2016/5/20
The temperature dependences of the reduction potentials (E degrees') of wild-type human myoglobin (Mb) and three site-directed mutants have been measured by the use of thin-layer spectroelectrochemist...