Temperature dependence of the interfacial behavior of uracil derivatives.
The effect of temperature on the interfacial behavior of uracil, thymine and 1,5-dimethyluracil has been used to characterize the thermodynamics of adsorption of these compounds at a mercury electrode-aqueous electrolyte interface. Between 4.5 degrees C and 40 degrees C all three compounds exhibit two adsorption regions. The first, a dilute layer where the molecules adsorb in a flat orientation on the electrode surface. The second, a compact layer where the molecules adsorb in a perpendicular orientation. The thermodynamic constants characterizing formation of these surface layers have been deduced.
D000327:Adsorption; D004563:Electrochemistry; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D008628:Mercury; D013696:Temperature; D013816:Thermodynamics; D013941:Thymine; D014498:Uracil / Q000031:analogs & derivatives*
D014498:Uracil; D008628:Mercury; D013941:Thymine