Structure, dynamics, and the free energy of solute adsorption at liquid-vapor interfaces of simple dipolar systems: molecular dynamics results for pure and mixed Stockmayer fluids

Article Abstract:

Molecular dynamics simulation is used for studying the structural, thermodynamic and dynamical properties of liquid-vapor interfaces of pure and binary Stockmayer fluids of different polarity. The free energy calculations have shown no minimum at the interfaces for adsorption of a charged solute, indicating that the ions have stayed in the interior of the liquid states, rather than at interfaces, for these model dipolar systems.

Science & research, Research, Analysis, Molecular dynamics, Vapor-liquid equilibrium, Adsorption, Thermodynamics, Vapour-liquid equilibrium

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Perchlorate interchange during the redox of PPy/PVS films in an acetonitrile medium. A voltammetric and EDX study

Article Abstract:

The polypyrrole/poly(vinyl sulfonate) (PPy/PVS) films in acetonitrile containing 0.1 M LiC1O(sub 4) were studied by cyclic voltammetry. The result was confirmed by 'ex situ' energy-dispersive X-ray analysis of the films and the increase and shift of the voltammetric cycles indicated a restructuring of the polymeric chains with consecutive scans.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Acetonitrile, Usage, Chemical properties, Pyrrole, Pyrroles, X-ray analysis

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