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Related Experiment Video

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A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles
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Rationally Designed Energy Transfer in Upconverting Nanoparticles.

Emory M Chan1, Elizabeth S Levy1, Bruce E Cohen1

  • 1The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.

Advanced Materials (Deerfield Beach, Fla.)
|March 27, 2015
PubMed
Summary
This summary is machine-generated.

Upconverting nanoparticles (UCNPs) harness multiple infrared photons for higher-energy emission. Advanced designs and computational models enable precise control over energy transfer pathways, enhancing UCNP brightness and applications.

Keywords:
NIR imagingenergy transferluminescencenanoparticlesupconversion

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Photonics

Background:

  • Upconverting nanoparticles (UCNPs) convert multiple near-infrared (NIR) photons into higher-energy emissions.
  • Understanding energy transfer (ET) pathways is crucial for optimizing UCNP performance.
  • Lanthanide co-dopants, concentrations, and spatial distribution significantly influence UCNP optical properties.

Purpose of the Study:

  • To review recent advancements in the analysis and theoretical modeling of UCNP energy transfer.
  • To explore how complex UCNP architectures can direct ET for enhanced functionality.
  • To highlight the role of computational models in designing novel UCNPs.

Main Methods:

  • Analysis of complex UCNP architectures with segregated lanthanides.
  • Theoretical modeling of energy transfer pathways within UCNPs.
  • Review of recent research on heterostructure and unit cell designs.

Main Results:

  • Engineered UCNP architectures direct ET to enhance brightness and control emission wavelengths.
  • Specific designs can suppress unwanted electronic transitions and sensitize absorption.
  • Novel UCNP designs exhibit exceptional brightness, enabling single-molecule imaging.

Conclusions:

  • Rational design of ET pathways in UCNPs is accelerating their development.
  • Tailored UCNPs are emerging for nanophotonic applications requiring efficient energy flow.
  • Advanced modeling and architectural engineering are key to unlocking UCNP potential.