Synergetic Effect in Triplet-Triplet Annihilation Upconversion: Highly Efficient Multi-Chromophore Emitter

The synergetic effect on the efficiency of triplet–triplet‐annihilation‐assisted photon upconversion, as a result of a synthetic procedure for simultaneous and independent optimization of the intrinsic efficiencies of triplet–triplet transfer and triplet–triplet annihilation, is demonstrated (see pi...

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Veröffentlicht in:	Chemphyschem 2012-09, Vol.13 (13), p.3112-3115
Hauptverfasser:	Turshatov, Andrey, Busko, Dmitry, Avlasevich, Yuri, Miteva, Tzenka, Landfester, Katharina, Baluschev, Stanislav
Format:	Artikel
Sprache:	eng
Schlagworte:	Atomic and molecular physics emitter dyads Exact sciences and technology Fluorescence and phosphorescence spectra Fluorescence and phosphorescence radiationless transitions, quenching (intersystem crossing, internal conversion) Fundamental areas of phenomenology (including applications) metallated macrocycles Molecular properties and interactions with photons non-coherent optical excitation Optical materials Optics photochemistry Physics Polymers and organics triplet-triplet annihilation
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Zusammenfassung:	The synergetic effect on the efficiency of triplet–triplet‐annihilation‐assisted photon upconversion, as a result of a synthetic procedure for simultaneous and independent optimization of the intrinsic efficiencies of triplet–triplet transfer and triplet–triplet annihilation, is demonstrated (see picture). The new system shows high upconversion quantum yields of order of 0.11.
ISSN:	1439-4235 1439-7641
DOI:	10.1002/cphc.201200306