Energy transfer between organic ligands and rare earth ions

Energy transfer between organic ligands and rare earth ions Investigation of rare earth S-diketonate photoluminescence began in 1942 with Weiss-man s work , which was the first observation of the indirect excitation arising from the 

FIGURE 5. Partial energy level diagram of RE + ions. Some triplet states of diketonate ligands are shown on the left. Arrows indicate emitting levels. Reproduced with permission from Reference 42, Copyright 1989 American Institute of Physics 

FIGURE 6. The antenna effect in the luminescence of rare-earth complexes. Reproduced by permission from Reference 2, Copyright 2005 the Royal Society of Chemistry 

FIGURE 7. Schematic energy level diagram showing the possible energy transfer processes in a rare-earth ion coordination compound. Dashed arrows indicate energy transfer and wavy arrows indicate non-radiative decays. Reproduced with permission from Reference 20, Copyright 2000 Elsevier 

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