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Near-Infrared→Visible Light Upconversion in a Molecular Trinuclear d–f–d Complex

Authors

  • Lilit Aboshyan-Sorgho,

    1. Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4 (Switzerland)
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  • Dr. Céline Besnard,

    1. Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet, 1211 Geneva 4 (Switzerland)
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  • Dr. Phil Pattison,

    1. Laboratory of Crystallography, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
    2. Swiss Norwegian Beamline (SNBL), ESRF, Grenoble (France)
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  • Dr. Kevin R. Kittilstved,

    1. Department of Physical Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4 (Switzerland)
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  • Dr. Annina Aebischer,

    1. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • Prof. Dr. Jean-Claude G. Bünzli,

    1. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • Prof. Dr. Andreas Hauser,

    Corresponding author
    1. Department of Physical Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4 (Switzerland)
    • Department of Physical Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4 (Switzerland)
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  • Prof. Dr. Claude Piguet

    Corresponding author
    1. Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4 (Switzerland)
    • Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4 (Switzerland)
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  • This work was supported through grants of the Swiss National Science Foundation.

Abstract

original image

Giving the green light: The connection of two CrIII sensitizers around a central ErIII acceptor in a self-assembled cation provides high local metal concentrations that favor efficient nonlinear energy transfer upconversion luminescence (see picture). Upon selective low-energy near-infrared irradiation of CrIII-centered transitions, 1 displays an unprecedented molecular two-photon upconverted green ErIII-centered emission.

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