Insight into the Luminescence Behavior of Europium(III) β-Diketonate Complexes Encapsulated in Zeolite L Crystals

Authors

  • Tingting Wen,

    1. Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130 (P. R. China)
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  • Prof. Wenjun Zhang,

    1. Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130 (P. R. China)
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  • Xuejun Hu,

    1. Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130 (P. R. China)
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  • Liang He,

    1. Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130 (P. R. China)
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  • Prof. Huanrong Li

    Corresponding author
    1. Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130 (P. R. China)
    • Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130 (P. R. China)
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Abstract

The acidity of europium(III)-exchanged zeolite L (Eu3+/ZL) and its influence on the luminescence performances of encapsulated europium(III) β-diketonate complexes are reported. The results indicate the importance of understanding the acidity of Eu3+/ZL in the preparation of luminescent host–guest materials of zeolite L crystals and europium(III) β-diketonate complexes. The acidity of Eu3+/ZL was determined roughly by using a dye (thionine) as the probe molecule. The luminescence performances of the host–guest materials, including excitation and emission spectra, lifetime of Eu3+ ions, quantum yield, and energy transfer efficiency, have been investigated. The luminescence behavior of the host–guest materials can be tuned by changing the acidity inside the channels of the zeolite L crystals and can potentially be used as a sensor for detecting ammonia.

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