Inter-and intramolecular hydrogen bonding in phenol derivatives: A model system for poly-L-tyrosine

Article Abstract:

The ultrafast dynamics of solutions of phenol and two phenol derivatives namely hydroquinone (1,4-benzenediol) and pyrocatechol (1,2-benzenediol) are studied with Optically Heterodyne-Detected Optical Kerr-Effect (OHD-OKE) spectroscopy. The solvents, methanol and acetonitrile, were selected to provide strong and weak solvent-solute hydrogen-bonding interactions, respectively while pyrocatechol features an intramolecular hydrogen bond.

Cyclic crudes and intermediates, Cyclic Crude and Intermediate Manufacturing, Hydroquinone

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X-ray Raman spectroscopic study of benzene at high pressure

Article Abstract:

X-ray Raman spectroscopy (XRS) is used for studying benzene in a diamond anvil cell at high pressure and ambient temperature. The spectral changes with pressure have shown bonding changes that has occurred with pressure due to phase changes and also due to changes in the hybridization of the bonds.

Technology application, High pressure chemistry, Chemical bonds, Raman spectroscopy, Hybridization, Atomic properties

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The ultrafast dynamics of hydrogen-bonded liquids: molecular structure-dependent occurrence of normal Arrhenius or fractional Stokes-Einstein-Debye rotational diffusive relaxation

Article Abstract:

The ultrafast dynamics of hydrogen-bonded liquids such N-methylacetamide (NMA) was studied as a function of temperature using heterodyne detected optical Kerr effect spectroscopy. It was found that NMA exhibits a non-Arrhenius temperature dependence of the rotational diffusive relaxation time.

Analysis, Molecular dynamics, Chemical properties, Methyl groups, Methyl compounds

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