title: Preparation, characterization and photoluminescence properties of ternary europium complexes Eu(DBM)3bath encapsulated into aluminosilicate zeolites.
abstract: To modify the photoluminescence properties the Eu(DBM)3bath complexes were encapsulated into the sub-nanometer pores of aluminosilicates zeolites L and Y and characterized by X-ray diffraction (XRD), transmission electron micrographs (TEM), Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible (UV-vis) absorption spectra. The luminescent properties of the encapsulated composites (Eu-L and Eu-Y) were systematically studied. The results indicate that in both the two composites the crystal-field symmetry becomes lower, as a consequence, the 5D0-7F2 electronic-dipole transition relative to the 5D0-7F1 magnetic-dipole transition of Eu3+ increases in contrast to the pure complexes. The outer quantum efficiency of the Eu3+ emission and the photostability of Eu3+ are both improved considerably. The adsorption of water in the composites has influence on the thermostability and decay dynamics of the Eu3+ emission. In the composite Eu-L, which contains less water the thermostability of luminescence is improved considerably and the lifetime becomes longer in comparison to the pure complexes. Overall, zeolite L is a more ideal host material for modification of lanthanide complexes.
authors.affiliation: Key Laboratory of Excited State Physics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, and Graduate School of Chinese Academy of Sciences, 16 Eastern Nan-Hu Road, Changchun 130033, P. R. China.
authors.forename: Huihui
authors.initials: H
authors.lastname: Liu
authors.forename: Hongwei
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authors.lastname: Song
authors.forename: Suwen
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authors.lastname: Li
authors.forename: Xinguang
authors.initials: X
authors.lastname: Ren
authors.forename: Shaozhe
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authors.lastname: Lu
authors.forename: Hongquan
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authors.lastname: Yu
authors.forename: Guohui
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authors.lastname: Pan
authors.forename: Hui
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authors.lastname: Zhang
authors.forename: Lanying
authors.initials: L
authors.lastname: Hu
authors.forename: Qilin
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authors.lastname: Dai
authors.forename: Ruifei
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authors.lastname: Qin
authors.forename: Jihong
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authors.lastname: Yu
authors.forename: Guangmei
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authors.lastname: Wang
authors.forename: Jiuxing
authors.initials: J
authors.lastname: Jiang