Resonance energy transfer, luminescent probes

Note As for TRF, the term fluorescence is in fact misused in TR-FRET. In the spectroscopic Hteratirre, resonance energy transfer from a long-Hfetime probe such as a lanthanide chelate is termed LRET (luminescence RET) [121]. 

Two mechanisms are conceivable. The first is a luminescence resonance energy transfer (LRET) from the UCNPs to nearby molecules of the iridium (or other) probe for oxygen. Alternatively (or in addition), the UCNPs may act as nanolamps whose blue emission leads to the photoexcitation of the iridium complex. The applicability and full reversibility was demonstrated on alternately exposing the sensor film to argon and oxygen, which resulted in a fully reversible increase and decrease of the emission of the iridium(III) complex, respectively, as shown in Fig. 9... 

Heyduk, E. and Heyduk, T. Thiol-reactive, luminescent europium chelates Luminescence probes for resonance energy transfer distance measurements in biomolecules. Anal. Biochem. 248 216-227, 1997. 

Marti, A. A. Puckett, C. A. Dyer, J. Stevens, N. Jockusch, S. Ju, J. Barton, J. K. Turro, N. J. Inorganic-organic hybrid luminescent binary probe for DNA detection based on spin-forbidden resonance energy transfer. J. Am. Chem. Soc. 2007,129, 8680-8681. 

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