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Updated: Jun 1, 2026

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

Published on: November 14, 2015

Upconverting nanoparticles.

Markus Haase¹, Helmut Schäfer

¹Inorganic Chemistry I, University of Osnabrück, Barbarastrasse 7, 49069 Osnabrück, Deutschland.

Angewandte Chemie (International Ed. in English)

|June 1, 2011

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Nanoscale advances·2022

Upconversion (UC) materials efficiently emit shorter wavelength light by absorbing multiple photons. These rare-earth doped nanocrystals offer tunable properties for advanced applications like medical imaging.

Area of Science:

Nonlinear Optics
Materials Science
Nanotechnology

Background:

Upconversion (UC) involves absorbing multiple photons to emit higher-energy light (anti-Stokes emission).
UC is efficiently excited at low power densities, unlike other multiphoton processes.
Solid-state materials doped with rare-earth ions exhibit the most effective UC mechanisms.

Purpose of the Study:

To explore synthesis routes for highly efficient, small upconversion (UC) nanocrystals.
To control UC nanocrystal properties like size, solubility, and optical characteristics.
To evaluate UC nanocrystals as alternatives in medical imaging.

Main Methods:

Synthesis of rare-earth doped solid-state nanocrystals.
Characterization of nanocrystal size distribution, solubility, crystallographic phase, and optical properties.

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Last Updated: Jun 1, 2026

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

A 'Plug and Play' Method to Create Water-dispersible Nanoassemblies Containing an Amphiphilic Polymer, Organic Dyes and Upconverting Nanoparticles

Published on: November 14, 2015

Triplet Fusion Upconversion Nanocapsule Synthesis

Triplet Fusion Upconversion Nanocapsule Synthesis

Published on: September 7, 2022

Investigation of upconversion emission mechanisms and efficiency.

Main Results:

Development of synthesis routes for high-quality UC nanocrystals with controlled properties.
UC nanocrystals demonstrate efficient anti-Stokes emission even at low excitation densities.
UC nanocrystals can be tailored for solubility, size, phase, and shape.

Conclusions:

UC nanocrystals offer tunable optical properties and efficient light emission.
These nanocrystals are synthesized with controlled characteristics for various applications.
UC nanocrystals show significant potential as alternatives in medical imaging.