Solution‐State Cooperative Luminescence Upconversion in Molecular Ytterbium Dimers
Source abstract
Abstract
Abstract Two homometallic ytterbium dimers are prepared and their solution‐state photoluminescence and upconversion properties are investigated. Both complexes exhibit two‐photon cooperative luminescence upconversion in the visible region (λem ≈ 510 nm) upon excitation into the near‐infrared Yb 2F5/2 ← 2F7/2 absorption band at 980 nm. This miniaturization of the cooperative luminescence phenomenon down to just two Yb ions unequivocally proves the mechanistic origins of this process. Time‐resolved measurements and excited‐state modeling indicate the presence of a slow recombination of two singly excited ions Yb*Yb* into a virtual excited state, which ultimately gives rise to the observed emission at ≈510 nm.
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Research context
OpenAlex topics: Lanthanide and Transition Metal Complexes · Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Equipe de Synthèse Pour l'Analyse (SynPA) Institut Pluridisciplinaire Hubert Curien (IPHC) UMR 7178 CNRS Université de Strasbourg ECPM, 25 rue Becquerel Strasbourg Cedex 67087 France
Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química Universidade da Coruña Campus da Zapateira‐Rúa da Fraga 10 A Coruña 15008 Spain
Laboratoire de Bioimagerie et Pathologies Faculté de Pharmacie CS60024 74 CNRS UMR 7021 Université de Strasbourg Route du Rhin Illkirch‐Graffenstaden 67401 France
CNRS ISCR‐UMR 6226 Université de Rennes Rennes F‐35000 France
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