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Updated: Mar 18, 2026

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
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Constructing Interfacial Energy Transfer for Photon Up- and Down-Conversion from Lanthanides in a Core-Shell

Bo Zhou1, Lili Tao2,3, Yang Chai2

  • 1Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China. eebzhou@gmail.com.

Angewandte Chemie (International Ed. in English)
|July 6, 2016
PubMed
Summary

We developed a new method using interfacial energy transfer to control lanthanide photon emission in core-shell nanoparticles. This approach enables efficient up- and down-converted emissions without needing a migratory host sublattice.

Keywords:
core-shell architecturedown-conversioninterfacial energy transferlanthanidesup-conversion

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photonics

Background:

  • Lanthanide-based nanoparticles are crucial for luminescence applications.
  • Controlling photon emission in these materials often relies on host sublattice migration.
  • Existing methods face limitations in precise control over energy transfer.

Purpose of the Study:

  • To introduce a novel mechanistic strategy for controlling lanthanide photon emission.
  • To utilize interfacial energy transfer for efficient luminescence in core-shell nanostructures.
  • To demonstrate a new pathway for designing advanced lanthanide luminescent materials.

Main Methods:

  • Fabrication of core-shell nanoparticles with Gadolinium(III) (Gd3+) as the energy donor.
  • Utilizing interfacial energy transfer to excite various lanthanide emitters (Eu3+, Tb3+, Dy3+, Sm3+).
  • Characterization of up- and down-converted emissions in the synthesized nanoparticles.

Main Results:

  • Achieved efficient up- and down-converted emissions from multiple lanthanide emitters.
  • Demonstrated that Gd3+-mediated interfacial energy transfer is the primary emission driver, bypassing the need for a migratory host sublattice.
  • Confirmed the dominance of interfacial energy transfer over energy migration in the NaGdF4@NaGdF4 core-shell system.

Conclusions:

  • Interfacial energy transfer offers a powerful new strategy for controlling lanthanide luminescence.
  • This mechanism provides efficient photon emission without requiring a migratory host sublattice.
  • The findings open new avenues for designing and enhancing lanthanide-based luminescent materials.