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P. E. Keivanidis, S. Baluschev, G. Lieser and G. Wegner Inherent Photon Energy Recycling Effects in the Up-Converted Delayed Luminescence Dynamics of Poly(fluorene)–PtIIoctaethyl Porphyrin Blends ChemPhysChem 10

Version of Record online: 11 AUG 2009 | DOI: 10.1002/cphc.200900290

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Triplet emitters: Following photoexcitation of the PF26:PtOEP blends at 532 nm, triplet–triplet annihilation (TTA) between two PtOEP molecules (see step 1 in figure) leads to non-radiative energy transfer from PtOEP** to PF26 (step 2). With increasing PtOEP content, the observed TTA-activated PF26 up-converted delayed fluorescence (420 nm) is quenched via the process of Forster energy-transfer back to PtOEP (step 3).

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