Critical effects on attractive solutes in binary liquid mixtures close to their consolute point: a new experimental strategy
- Gutkowski, Karin
- Fernandez Prini, Roberto
- Aramendia, Pedro Francisco
- Japas, María Laura
DOIAbstract
The effect of near-criticality upon the properties of dilute solutions of attractive solutes has been previously studied only using pure solvents close to the vapor-liquid critical point. The experimental difficulties that plague this thermodynamic region have somewhat obscured the interpretations of the results. Consequently, the coupling of long-range critical fluctuations with short-range intermolecular interactions is still a matter of debate. We developed a new strategy consisting of studying the changes in the solvation shell of probe molecules dissolved in a binary solvent mixture close to its lower consolute critical point. The study is based on UV-vis absorption and fluorescent emission measurements of the solvatochromic and thermo...
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