Spectral-Kinetic Properties and Energy Transfer in Nanoparticles of Y0.5–xCe0.5TbxF3 Solid Solution

CeF3-YF3-TbF3 Nanoparticle-Polymer–“Radachlorin” Conjugates for Combined Photodynamic Therapy: Synthesis, Characterization, and Biological Activity

“…The results of lifetime evaluation are presented in Figure 2c. The value of luminescence of Tb 3+ ions at 541 nm in our colloidal solution without Radachlorin appears to be larger than that obtained by us for dry samples in our previous work [8], most probably due to radiative energy transfer between NPs. Then, the decay time values were used to calculate the efficiency of the energy transfer from NPs to Radachlorin.…”

“…In the case under study for water solutions, the orientation factor can be averaged as 2/3; n is taken equal to the refractive index of water 1.333. The optical properties of the NPs have already been studied, and the results have been published [8]. Thus, the Q D value can be borrowed from the article as 83%.…”

“…The Ce 0.5 Y 0.35 Tb 0.15 F 3 fluoride material is well studied for different photonic applications [8,9]. In our previous work, the spectral-kinetic properties as well as morphology and chemical composition of these NPs was thoroughly investigated [8].…”

“…The Ce 0.5 Y 0.35 Tb 0.15 F 3 fluoride material is well studied for different photonic applications [8,9]. In our previous work, the spectral-kinetic properties as well as morphology and chemical composition of these NPs was thoroughly investigated [8]. It was established that upon ultraviolet excitation, the NPs produce intense emissions in the visible range with lifetimes around 10 ms, which is the result of efficient nonradiative resonant energy transfer from Ce 3+ ions to Tb 3+ ions.…”