Solvation dynamics in nonassociated polar solvents

Article Abstract:

The molecular hydrodynamic theory was used to examine the ultrafast solvation dynamics in the nonassociated polar solvents acetonitrile, dimethyl sulfoxide and acetone. An excellent agreement between the theory and experimental results has been observed for acetonitrile. The ultrafast component in the solvent seems to be due to the fast rotation of the cyanide group around the CH3-CN bond. For acetone and dimethyl sulfoxide, the theory predicts a decay much slower than the experimental observations, which seems to be due to the specific chromophore-solvent interactions in these two solvents.

Solvation, Dimethyl sulfoxide, Acetonitrile, Acetone

---

Proteins as solvents: blue copper proteins as a molecular ruler for solvent effects on resonance Raman intensities

Article Abstract:

Cupredoxins or type I blue copper proteins found in the photosynthetic electron transport apparatus of plants were studied using resonance Raman spectra. Excitation leading to solvent-solute charge-transfer transition showed increased degree of spectral similarity as the amino acid homology of the proteins increases. As the spectra exhibit good signal/noise ratios, the observed spectral differences reflect actual differences in ground-state or excited-state structures.

Usage, Plant proteins, Raman effect

---

Chemical transfer energetics of the -CH2- group: a possible probe for the solvent effect on hydrophobic hydration and the 3D-structuredness of solvents

Article Abstract:

A study was conducted to analyze the chemical transfer energies of the -CH2- group and examine solvent effects on hydrophobic hydration and the three-dimensional structuredness of solvents. Constancy of absorbance was used as the criterion of the attainment of equilibrium. Results indicated that the chemical transfer energetics and entropies of -CH2- correlated with the solvent effect on HbH and the three-dimensional structuredness of aquo-organic cosolvents.

Hydration, Rehydration solutions

Similar abstracts:

• Abstracts: Solvation dynamics in nonaqueous reverse micelles. Force field development for poly(dimethylsilylenemethylene) with the aid of ab initio calculations
• Abstracts: Optical absorption of a green fluorescent protein variant: environmental effects in a density functional study
• Abstracts: Fluorcarbons dissolved in supercritical carbon dioxide. NMR evidence for specific solute-solvent interactions
• Abstracts: Kinetics of accumulation of molecules into liposomes. Molecular realism in default models for information theories of hydrophobic effects
• Abstracts: Prediction of the polar morphology of sodium chlorate using a surface-specific attachment energy model. Crystallinity of polyethylene derived from solid-state proton NMR free induction decay

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.