搜索结果: 1-8 共查到“化学 electric fields”相关记录8条 . 查询时间(0.088 秒)
Measuring Electric Fields and Noncovalent Interactions Using the Vibrational Stark Effect
Organic Chemicals Proteins Vibration Models,Molecular Static Electricity
2016/5/25
Over the past decade, we have developed a spectroscopic approach to measure electric fields inside matter with high spatial (<1 Å) and field (<1 MV/cm) resolution. The approach hinges on exploiti...
Extreme Electric Fields Power Catalysis in the Active Site of Ketosteroid Isomerase
Electric Power Catalysis Active Site Ketosteroid Isomerase
2016/5/25
Enzymes use protein architecture to impose specific electrostatic fields onto their bound substrates, but the magnitude and catalytic effect of these electric fields have proven difficult to quantify ...
Calculations of the Electric Fields in Liquid Solutions
Calculations Electric Fields Liquid Solutions
2016/5/25
The electric field created by a condensed-phase environment is a powerful and convenient descriptor for intermolecular interactions. Not only does it provide a unifying language to compare many differ...
Direct Measurements of Electric Fields in Weak OH••π Hydrogen Bonds
Direct Measurements Electric Fields Weak OH• • π Hydrogen Bonds
2016/5/25
Hydrogen bonds and aromatic interactions are of widespread importance in chemistry, biology, and materials science. Electrostatics play a fundamental role in these interactions, but the magnitude of t...
Phosphate Vibrations Probe Local Electric Fields and Hydration in Biomolecules
Phosphates Water Phospholipids Spectrophotometry, Infrared Electricity Models, Molecular
2016/5/25
The role of electric fields in important biological processes such as binding and catalysis has been studied almost exclusively by computational methods. Experimental measurements of the local electri...
Electric Fields at the Active Site of an Enzyme:Direct Comparison of Experiment with Theory
Humans Nitriles Enzyme Inhibitors Spectrophotometry, Infrared Spectrum Analysis Circular Dichroism Electricity Protein Conformation Protein Structure,Tertiary Protein Folding
2016/5/24
The electric fields produced in folded proteins influence nearly every aspect of protein function. We present a vibrational spectroscopy technique that measures changes in electric field at a specific...
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
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...
Effects of Applied Electric Fields on the Quantum Yields for the Initial Electron Transfer Steps in Bacterial Photosynthesis:II.Dynamic Stark Effect
Applied Electric Fields Quantum Yields Initial Electron Transfer Steps Bacterial Photosynthesis Dynamic Stark Effect
2016/5/23
The quantum yield of the initial charge separation steps in bacterial photosynthetic reaction centers has been shown to be reduced in an applied electric field [Part I, Lao et al., J. Phys. Chem. 97 (...