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Related Experiment Video

Updated: Mar 19, 2026

An Integrated System to Remotely Trigger Intracellular Signal Transduction by Upconversion Nanoparticle-mediated Kinase Photoactivation
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Energy-Relay-Engineered Upconversion Emission with Intrinsic Environmental Responsiveness.

Shuqing Li1, Fei Zhao1, Wenrui Zhang1

  • 1Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, China.

Advanced Materials (Deerfield Beach, Fla.)
|March 18, 2026
PubMed
Summary

We developed an energy-relay strategy using lanthanide upconversion nanoparticles (UCNPs) and NIR dyes. This approach significantly enhances UCNP responsiveness for sensitive thermal and chemical sensing applications.

Keywords:
energy‐relaylanthanidenear‐infrared dyeupconversion luminescence

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A Step Beyond BRET: Fluorescence by Unbound Excitation from Luminescence FUEL
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Area of Science:

  • Nanotechnology
  • Materials Science
  • Chemical Sensing

Background:

  • Lanthanide-based upconversion nanoparticles (UCNPs) exhibit excellent photostability and large anti-Stokes shifts.
  • However, their poor environmental responsiveness limits their application in sensing.
  • Existing UCNPs lack the sensitivity required for precise environmental monitoring.

Purpose of the Study:

  • To enhance the environmental responsiveness of UCNPs for improved sensing capabilities.
  • To develop a novel energy-relay strategy integrating near-infrared (NIR) dyes with UCNPs.
  • To demonstrate the potential of this strategy for sensitive thermal and chemical sensing.

Main Methods:

  • Integration of NIR dyes (e.g., Cy7.5) with Er3+/Tm3+ doped UCNPs.
  • Utilizing a 980 nm excitation source to initiate an energy cascade.
  • Characterization of energy transfer dynamics and emission amplification through dopant architecture modification.

Main Results:

  • An energy-relay mechanism was established, amplifying the Er3+ emission by two orders of magnitude.
  • The energy-relay effect was found to be highly dependent on the dopant architecture.
  • The modified UCNPs maintained excellent photostability while gaining environmental responsiveness.
  • Successful demonstration of sensitive thermal and chemical sensing using the energy-relay nanoprobe.

Conclusions:

  • Energy-relay engineering is a versatile strategy for creating stable, efficient, and responsive UCNP platforms.
  • This approach overcomes the limitations of traditional UCNPs in sensing applications.
  • The developed nanoprobe shows promise for advanced environmental monitoring and diagnostics.