Solubility and fluorescence lifetime of 2,5-diphenyloxazole and 1,4-bis(5-phenyl-oxazolyl-2)benzene in water-ethanol and water-acetone solvent systems

Equations, describing the dependence of solubility and fluorescence lifetime of luminophores on solvent parameters, are presented. It has been revealed that both solubility of PPO and POPOP and their fluorescence lifetimes are controlled mainly by the energy of cavity formation.