FIELD: chemistry.
SUBSTANCE: polymer nanoparticles contain a medium for photon up-conversion and a stabilising agent. Said medium contains a polymer matrix having two organic components distributed therein. The first component is capable of absorbing light at a first wavelength in the range w≤λ1≤x and acts as a sensitiser in said medium. The second component is capable of emitting light at a second wavelength in the range y≤λ2≤z, where λ2≤λ1, and acts as an emitting component in said medium. The stabilising agent is selected from hydrophilic or amphiphilic polymers.
EFFECT: polymer nanoparticles have versatility with respect to the radiation wavelengths, both incident and emitted, the size and surface properties of said nanoparticles can be controlled, thereby enabling photon up-conversion for opto-electronic devices.
15 cl, 13 dwg, 4 ex
