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Photoluminescence: Applications01:14

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Related Experiment Video

Updated: Mar 18, 2026

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
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Coordination polymer core/shell structures: Preparation and up/down-conversion luminescence.

Bingmei Li1, Hualan Xu2, Chen Xiao1

  • 1College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China.

Journal of Colloid and Interface Science
|June 27, 2016
PubMed
Summary

This study presents novel core-shell nanoparticles using gadolinium-based (GdCP) and europium-based (EuCP) coordination polymers. These GdCP/EuCP nanoparticles exhibit enhanced luminescence, offering potential for advanced optical applications.

Keywords:
Coordination polymerCore/shellLuminescenceNanostructuresRare earth

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Inorganic Chemistry

Background:

  • Coordination polymers (CPs) are versatile materials with tunable properties.
  • Core-shell nanostructures offer unique advantages for material integration and performance enhancement.
  • Gadolinium (Gd) and Europium (Eu) based CPs are known for their magnetic and luminescent properties, respectively.

Purpose of the Study:

  • To synthesize Gd-based CP (GdCP) core-shell nanoparticles with an Eu-based CP (EuCP) shell.
  • To investigate the structural, morphological, and luminescent properties of the synthesized core-shell nanoparticles.
  • To evaluate the performance of these core-shell nanostructures for luminescence applications.

Main Methods:

  • Preparation of GdCP core nanoparticles using allantoin as an organic building block.
  • Formation of EuCP shell around GdCP cores to create core-shell nanospheres.
  • Characterization using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX), powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), and thermo-gravimetric analysis (TG).
  • Evaluation of luminescence properties under 980nm and 394nm excitation.

Main Results:

  • Uniform GdCP core nanospheres (approx. 45nm) and core-shell nanospheres (approx. 60nm) were successfully synthesized without templates.
  • The core-shell structure was confirmed by various characterization techniques.
  • Enhanced luminescence efficiency was observed in core-shell nanoparticles compared to the core under 980nm excitation.
  • A decrease in down-conversion luminescence was noted when excited at 394nm.

Conclusions:

  • Successfully fabricated GdCP/EuCP core-shell nanoparticles with allantoin.
  • The core-shell structure enhances luminescence efficiency under specific excitation.
  • These findings suggest potential applications in areas requiring tailored luminescence properties.