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Reversible emission color switching of triplet–triplet annihilation‐based photon upconversion (TTA‐UC) is achieved by employing an Os complex sensitizer with singlet‐to‐triplet (S‐T) absorption and an asymmetric luminescent cyclophane with switchable emission characteristics. The cyclophane contains the 9,10‐bis(phenylethynyl)anthracene unit as an emitter and can assemble into two different structures,...
Reversibles Umschalten der Emissionsfarbe bei Photonenaufwärtskonversion durch Triplett‐Triplett‐Annihilierung weisen N. Yanai, N. Kimizuka et al. in ihrer Zuschrift auf S. 2856 nach. Ein Os‐Komplex als Sensibilisator zeigt eine große Anti‐Stokes‐Verschiebung aufgrund einer direkten Singulett‐nach‐Triplett(S‐T)‐NIR‐Anregung. In Kombination mit einem lumineszierenden Cyclophan als Emitter gelingt der...
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