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Near-IR to Near-IR Upconversion Luminescence in Molecular Chromium Ytterbium Salts.

ABSTRACT: Upconversion photoluminescence in hetero-oligonuclear metal complex architectures featuring organic ligands is an interesting but still rarely observed phenomenon, despite its great potential from a basic research and application perspective. In this context, a new photonic material consisting of molecular chromium(III) and ytterbium(III) complex ions was developed that exhibits excitation-power density-dependent cooperative sensitization of the chromium-centered 2 E/2 T1 phosphorescence at approximately 775?nm after excitation of the ytterbium band 2 F7/2 ?2 F5/2 at approximately 980?nm in the solid state at ambient temperature. The upconversion process is insensitive to atmospheric oxygen and can be observed in the presence of water molecules in the crystal lattice.

SUBMITTER: Kalmbach J

PROVIDER: S-EPMC7589230 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Near-IR to Near-IR Upconversion Luminescence in Molecular Chromium Ytterbium Salts.

Kalmbach Jens J Wang Cui C You Yi Y Förster Christoph C Schubert Hartmut H Heinze Katja K Resch-Genger Ute U Seitz Michael M

Angewandte Chemie (International ed. in English) 20200818 42

Upconversion photoluminescence in hetero-oligonuclear metal complex architectures featuring organic ligands is an interesting but still rarely observed phenomenon, despite its great potential from a basic research and application perspective. In this context, a new photonic material consisting of molecular chromium(III) and ytterbium(III) complex ions was developed that exhibits excitation-power density-dependent cooperative sensitization of the chromium-centered <sup>2</sup> E/<sup>2</sup> T<su ...[more]

PMID: 32558117

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