Dynamic scaling and slowing down in chemical reactions of the critical triethylamine-water system

Article Abstract:

Several special ultrasonic attenuation measurements are carried out to determine the Bhattacharjee-Ferrell scaling function, as well as to observe the phenomenon of dynamic scaling and slowing in chemical reactions of the triethylamine-water system. The analysis reveals that water play a very essential role in the unimolecular isomerization, which comes about as a result of an extensive arrangement of the hydration shells associated with the entire isomerization process.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Ethylamine, Analysis, Water, Optical properties, Isomerization, Chemical properties, Attenuation, Hydration (Chemistry)

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Microsecond to subnanosecond molecular relaxation dynamics of the interaction of Ca2+ with some carbohydrates in aqueous solution

Article Abstract:

Research was conducted to examine the microsecond to subnanosecond molecular relaxation dynamics of the interaction of Ca2+ with some carbohydrates in aqueous solution. Solutions of methyl-beta-D-arabinopyranoside and of 1,6-anhydro-beta-D-glucopyranoside, both with and without added Ca2+ and Ba2+ ions were studied using ultrasonic absorption spectra in the frequency range 1-500 MHz. Results provide strong evidence of cation-carbohydrate complex formation.

Carbohydrates, Calcium, Calcium (Chemical element), Cations, Relaxation (Nuclear physics)

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Molecular dynamics and kinetics of monosaccharides in solution. A broadband ultrasonic relaxation study

Article Abstract:

It has been possible to measure between 100 kHz and 2 GHz ultrasonic absorption spectra for aqueous solutions of D-mannose, D-galactose, D-ribose, D-glucose, D-arabinose, D-xylose and D-lyxose. This research identified a high frequency relaxation which appears to be the result of local fluctuations in the carbohydrate concentration.

Biomolecules

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