Manipulating energy migration in nanoparticles toward tunable photochromic upconversion.

ABSTRACT: Smart control of energy interactions plays a key role in manipulating upconversion dynamics and tuning emission colors for lanthanide-doped materials. However, quantifying the energy flux in particular energy migration in the representative sensitizer-activator coupled upconversion system has remained a challenge. Here we report a conceptual model to examine the energy flux in a single nanoparticle by designing an interfacial energy transfer mediated nanostructure. We show that energy migration indeed occurs simultaneously with energy transfer in a sensitizer-activator system and the competition between them can be quantified by proposing a characteristic ratio parameter. Moreover, this model is also able to realize the color-switchable photochromic upconversion by temporal control of up-t

SUBMITTER: Huang J 

PROVIDER: S-EPMC11686062 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature