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Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications

Published on: November 10, 2017

Energy upconversion in lanthanide-doped core/porous-shell nanoparticles.

Yunxin Liu¹, Dingsheng Wang, Lingling Li

¹Department of Chemistry, Tsinghua University , Beijing 100084, China.

Inorganic Chemistry

|March 29, 2014

Summary

This study introduces novel upconversion nanoparticles with a core/porous-shell structure, enabling simultaneous bulk and nanoemission. The porous shell effectively modifies bulk emission while preserving nanoemission properties.

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Area of Science:

Materials Science
Nanotechnology
Photonics

Background:

Upconversion nanoparticles (UCNPs) are crucial for various photonic applications.
Controlling emission properties in UCNPs remains a significant challenge.
Core/shell structures offer a platform for tuning UCNP optical properties.

Purpose of the Study:

To synthesize and characterize UCNPs with a unique core/porous-shell architecture.
To investigate the simultaneous observation of bulk and nanoemission.
To evaluate the influence of the porous shell on different emission modes.

Main Methods:

Synthesis of core/porous-shell UCNPs.
Characterization using spectroscopic techniques.
Analysis of emission properties under excitation.

Main Results:

Simultaneous bulk and nanoemission were successfully observed in the designed UCNPs.
The activated porous shell demonstrated efficient tuning of the bulk emission.
The nanoemission remained largely unaffected by the porous shell modifications.

Conclusions:

The core/porous-shell UCNP design provides a method for independent control of emission modes.
This architecture holds promise for advanced applications in sensing, imaging, and optoelectronics.
Further research can explore diverse shell compositions for tailored UCNP functionalities.