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Related Experiment Video

Updated: Mar 17, 2026

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
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Uniform Cerium-Based Coordination Polymer Microsnheres: Preoaration and Upconversion Emission.

Zhi-Wen Nie, Cheng-Hui Zeng, Gang Xie

    Journal of Nanoscience and Nanotechnology
    |July 26, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Synthesized Yb3+ and Er3+ doped cerium-based coordination polymer microspheres and their derived porous CeO2 counterparts exhibit distinct upconversion luminescence. The CeO2 materials show stronger emission, particularly in the red region, compared to the coordination polymers.

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    Area of Science:

    • Materials Science
    • Inorganic Chemistry
    • Nanotechnology

    Background:

    • Coordination polymers (CPs) offer versatile platforms for designing functional materials.
    • Rare-earth doping in host matrices is crucial for developing luminescent materials.
    • Cerium oxide (CeO2) is a promising host for upconversion applications.

    Purpose of the Study:

    • To synthesize large-scale Yb3+ and Er3+ doped cerium-based coordination polymer (CP) microspheres.
    • To investigate the structural and luminescent properties of the as-synthesized CPs and their derived porous CeO2 microspheres.
    • To compare the upconversion luminescence performance of CP microspheres and CeO2 microspheres.

    Main Methods:

    • Solvothermal synthesis using 2,5-pyridinedicarboxylic acid (2,5-H2PDC) as the organic linker.
    • Annealing of CP microspheres at 600 °C to obtain porous CeO2 microspheres.
    • Characterization using PXRD, SEM, TEM, FTIR, EDX, TG, and DTG analysis.
    • Room temperature upconversion luminescence spectroscopy under 980 nm NIR excitation.

    Main Results:

    • Successfully synthesized Yb3+ and Er3+ doped cerium-based CP microspheres.
    • Obtained porous CeO2: Yb3+, Er3+ microspheres by annealing the CPs.
    • CP microspheres exhibited single-band emission at 673 nm.
    • CeO2 microspheres showed green and red emissions, with red being dominant.
    • CeO2 microspheres displayed significantly stronger emission intensity than CP microspheres.

    Conclusions:

    • The solvothermal route is effective for large-scale synthesis of doped CP microspheres.
    • Annealing CPs yields porous CeO2 microspheres with enhanced upconversion luminescence.
    • The CeO2 host provides superior luminescence performance compared to the CP host for Yb3+/Er3+ doping.