TEMPERATURE-DEPENDENT QUENCHING OF PHOTOLUMINESCENCE OF POLYTUNGSTATE COMPLEXES OF CURIUM(III)

The temperature dependence of the lifetime of the luminescence of curium(III) complexes with several polytungstate anions has been studied. The activation energies of the process of temperature-dependent luminescence quenching have been found. It has been shown that the data obtained are in good agreement with the hypothesis that the quenching of the luminescence in these complexes takes place according to a charge-transfer mechanism. It has been noted that the luminescence properties of the complexes are directly related to the stability of tetravalent curium in them.