Люминесцентные свойства облученных электронами с энергией 12 MeV кристаллов шпинели MgO· 2.5Al-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-

The investigation of the luminescent properties of nonstoichiometric spinel compositions of MgO·2,5Al2O3 irradiated in direct and scattered beams of 12 MeV electrons on M-30 microtron are given. The phosphorescence decay kinetics of these compounds that occur after irradiation have been studied. It was found that the kinetics of induced luminescence can be described the Becquerel’s hyperbola. The degree parameter of this hyperbola is increased with increasing the dose of radiation. The regularities of the thermoluminescence peak change in the range of 110-250ºC with the dose are investigated. It is concluded that obtained results can be used for clinical and technological dosimetry of pulsed electron beams.

Enhancing the Phosphorescence Decay Pathway of Cu(I) Emitters – The Role of Copper-Iodide Moiety

Speeding up the phosphorescence channel in luminescent copper(I) complexes has been extremely challenging due to the copper atoms relatively low spin-orbit coupling constant compared to heavier metals such as Iridium....

The phosphorescence decay kinetics in the presence of a statistical distribution of molecules over the rates of radiative and non-radiative deactivation of triplet excitations

Approximate formulas of phosphorescence decay kinetics under the conditions of the statistical scatter of molecules over rate constants of radiative or non-radiative deactivation of triplet excitation have been obtained. It is shown that the phosphorescence decay function has different form for these two cases. The obtained difference in kinetics was used to establish the reason for the deviation from the exponential law and faster decay of the sensitized phosphorescence of naphthalene and diphenyl in n-paraffin matrices ( T = 77 K) in the presence of heavy atoms in the donor.

New red-emitting Schiff base chelates: promising dyes for sensing and imaging of temperature and oxygen via phosphorescence decay time

New complexes of Zn(ii), Pd(ii) and Pt(ii) with Schiff bases are prepared in a one step reaction and show photophysical properties particularly interesting for applications in optical sensors.