The luminescence properties of SmD and EuTTA

The results of measuring the absorption and emission spectra, decay time and quantum yield of the luminescence of SmD and EuTTA as a function of temperature (in a 77K–300K interval) and concentration are discussed. The energy transfer from the molecule organic part to the rare earth ion and the influence of nonradiative transitions are studied.The authors express their appreciation of the careful assistance in preparing the chelates given by Miss. H. Voka'lová and Mr. J. Voráek.