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Cooperative Infrared to Visible Up Conversion in Tb3+, Eu3+, and Yb3+ Containing Polymers

Authors

  • Ignacio Hernández,

    Corresponding author
    1. Centre for Materials Research, Department of Physics, Queen Mary University of London, Mile End Road, London E1 4NS (UK)
    • Centre for Materials Research, Department of Physics, Queen Mary University of London, Mile End Road, London E1 4NS (UK).
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  • Niranjeni Pathumakanthar,

    1. Centre for Materials Research, Department of Physics, Queen Mary University of London, Mile End Road, London E1 4NS (UK)
    2. Centre for Materials Research, School of Biological and Chemical Sciences, Queen Mary University of London Mile End Road, London, E1 4NS (UK)
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  • Peter B. Wyatt,

    1. Centre for Materials Research, School of Biological and Chemical Sciences, Queen Mary University of London Mile End Road, London, E1 4NS (UK)
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  • William P. Gillin

    1. Centre for Materials Research, Department of Physics, Queen Mary University of London, Mile End Road, London E1 4NS (UK)
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Abstract

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Intense visible photoluminescence is observed in Yb0.7Tb0.3(PFBS)3 (PBFS = perfluorobutane-sulfonate) coordination polymers upon IR excitation as a result of cooperative up-conversion (UC) processes. These occur when two individually excited Yb3+ ions simultaneously combine their energy into a high-energy excited state of Tb3+.

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