TB(III) CHELATE CHEMILUMINESCENCE INDUCED BY THE DISSOLUTION OF ADDITIVELY COLORED POTASSIUM-CHLORIDE IN AQUEOUS-SOLUTIONS OF PEROXYDISULFATE IONS

Dissolution of an additively coloured alkali halide crystal in an aque ous peroxydisulphate solution results in the formation of hydrated ele ctrons and sulphate radicals. These radicals are capable of inducing t erbium(III) chelate chemiluminescence by fast subsequent redox reactio ns, where the radiative D-5(4)-->F-7(j) transitions of coordinated ter bium(III) is based on a chemical excitation of the aromatic ligand by its interactions with these radicals, which is followed by an intramol ecular transfer of this excitation energy to the D-5(4) state of terbi um(III).